Diagram sections — 30 (49 total)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY COMPUTER COMPUTER DATA LINES COOLING FAN CRUISE CONTROL DEFOGGERS ELECTRONIC POWER STEERING ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER TOP/SUNROOF POWER WINDOWS RADIO SHIFT INTERLOCKS STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION TRUNK, TAILGATE, FUEL DOOR WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING A/C Wiring Diagram, Auto A/C (1 of 2) for Buick Regal GS 1998 List of elements for A/C Wiring Diagram, Auto A/C (1 of 2) for Buick Regal GS 1998: 75 (i/p harn, 34 cm from heater-a/c control breakout) (i/p harn, 4 cm from radio breakout) (i/p harness, 18 cm from radio breakout) (i/p harness, 4 cm from breakout to radio) (right side of dash) g201 (right side of steering column) sp205 +5 v A/c sol ctrl A/c solenoid Ambient outside temperature sensor (behind front panel, mounted to radiator air baffle) Battery Bi-lev sol ctrl Bi-level solenoid Blower motor Blower motor control module (behind dash, right of heater-a/c control) C 1995 vftc C10 C11 C12 C13 C14 C15 C16 Cntrl in D10 D11 D12 D13 D14 D15 D16 Data link connector (under left side of dash, right of steering column) Def sol ctrl Defrost solenoid Fuse block G201 (right side of dash) Grd Ground Heater solenoid Heater-a/c control High blower fuse 25a Hot at all times Hot in run Htr sol ctrl Hvac fuse 10a Ignition Inside air temperature sensor (right side of instrument cluster) Inside temp input Left electric actuator (left side of heater- a/c module) Lt elec actuator Motor drive Nca Outside temp input Radio,hvac fuse 10a Rear defog enable Rear defogger system Recirc sol ctrl Recirc solenoid Red Right electric actuator (right side of heater- a/c module) Rt elec actuator S202 (i/p harness, right of steering column) S230 S231 S233 S258 Sensor ground Serial data Solid state Spd cntrl Sun load input Sun load temperature sensor (top left of dash) Tan Vacuum/ electric solenoid (on right side of heater-a/c module) Volt to blw ctrl A/C Wiring Diagram, Auto A/C (2 of 2) for Buick Regal GS 1998 List of elements for A/C Wiring Diagram, Auto A/C (2 of 2) for Buick Regal GS 1998: 36 (engine harn, 13 cm from engine coolant fan 1 breakout) (engine harn, 15 cm from pcm breakout) s122 (engine harness) 5 volts ref A/c clu diode A/c clu fuse 10a A/c clu relay A/c compressor clutch A/c refrigerant pressure sensor (left side of engine compt, on accumulator) A10 A11 C 1995 vftc C11 Comp ctrl Cool fan 1 maxi fuse 40a Cool fan 1 relay Cool fan 2 maxi fuse 30a Cool fan 2 relay Cool fan 3 relay Engine controls system Engine coolant fan motor 1 Engine coolant fan motor 2 F12 G110 (left front of engine) Hi spd ctrl Hot at all times Ign main relay (closed in run, bulb test or start) Low spd ctrl Powertrain control module (left front side of engine compt, in air cleaner assembly) S105 S105 (engine harn, 13 cm from engine coolant fan 1 breakout) S167 Sensor grd Sensor sig Serial data Underhood accessory wiring junction block A/C Wiring Diagram, Manual A/C for Buick Regal GS 1998 List of elements for A/C Wiring Diagram, Manual A/C for Buick Regal GS 1998: 66 (eng harn, 15 cm from pcm breakout) (eng harness) (engine harn, 13 cm from engine coolant fan 1 breakout) (i/p harn, 4 cm from radio breakout) (i/p harness, 18 cm from radio breakout) 5 volts ref A/c compressor clutch A/c clu diode A/c clu fuse 10a A/c clu relay A/c refrigerant pressure sensor (left side of eng compt, on accumulator) A/c request sig A10 A11 Blower motor Blower motor relay Blower motor resistor Blower sw out C11 Clutch req Comp ctrl Cool fan 1 maxi fuse 40a Cool fan 1 relay Cool fan 2 maxi fuse 30a Cool fan 2 relay Cool fan 3 relay Defogger on Defogger system Engine controls system Engine coolant fan motor 1 Engine coolant fan motor 2 F12 Fuse block G110 (left front of engine) G201 (right side of dash) Ground Heater-a/c control Hi spd ctrl High blower fuse 20a Hot at all times Hot in run Hvac fuse 10a Ign main relay (closed in run, bulb test or start) Ignition Interior lights Interior lights system Lamp dim sig Left electronic actuator (left side of heater- a/c module) Left temp vlv Low blower fuse 20a Low spd ctrl Nca Off Powertrain control module (left front side of engine compt, in air cleaner assembly) Right electronic actuator (w/ cj3) (right side of heater- a/c module) Right temp vlv S105 S105 (engine harn, 13 cm from engine coolant fan 1 breakout) S122 S167 S230 S233 Sensor grd Sensor sig Tan Underhood accessory wiring junction block Compressor Wiring Diagram for Buick Regal GS 1998 List of elements for Compressor Wiring Diagram for Buick Regal GS 1998: 39 (auto a/c) (eng harn) (eng harn, 15 cm from pcm breakout) (manual a/c) (manual a/c) c2 5v ref A/c clu diode A/c clu fuse 10a A/c clu relay A/c compressor clutch A/c compressor relay control A/c refrigerant pressure sensor (left side of engine compt, on accumulator) A/c reqest A/c request signal Breakout) C11 D12 (auto a/c) Engine controls system Fuse block G110 (left front of engine) Heater- a/c control Hot at all times Hot in run Hot in run, bulb test or start Hvac fuse 10a Ign main relay Ignition Pcm-bcm fuse 10a Pnk Powertrain control module (left front side of eng compt, in air cleaner assembly) S106 (engine harn, 7 cm from pcm breakout) S122 S167 S233 (i/p harn, 4 cm from radio breakout) Sens grd Sens sig Serial data Sp205 (right side of steering column) Underhood accessory wiring junction block
ANTI-LOCK BRAKES Anti-lock Brake Wiring Diagrams for Buick Regal GS 1998 List of elements for Anti-lock Brake Wiring Diagrams for Buick Regal GS 1998: 84 (below dash, left of steering column) (left of steering column) g202 A10 A11 A12 Abs fuse 10a Abs-bcm fuse 10a Anti lock fail B10 B11 B12 Batt Brake Brake in Brake level in Brake modulator (left side of engine compt) Brake motor C1 stop lamp switch (brake pedal support bracket) Cluster fuse 10a Data line Electronic brake control relay (below left side of dash) Electronic brake traction control module (left side of dash) Electronic power steering system Electronic traction control brake pressure modulator valve (right rear of engine compt) Electronic traction control switch Enable rly output Ets mode sw Fuse block G202 Ground Hot at all times Hot in run or start Ign Instrument cluster Interior lights system L fnt mtr-hi L fnt mtr-lo Left fnt wheel spd Left front abs solenoid Left front motor Left front tcs motor Left front wheel speed sensor Left rear wheel spd Left rear wheel speed sensor Left solenoid Low trac Lt frt tcs hi Lt frt tcs low Msva high Msva low Nca Pnk Powertrain control module (front left side of engine) Pressure ind Rear motor Rear mtr-hi Rear mtr-lo Red Right front abs solenoid Right front motor Right front tcs motor Right front wheel speed sensor Right rear wheel speed sensor Rly coil ctrl Rt fnt mtr-hi Rt fnt mtr-lo Rt fnt solenoid Rt fnt wheel spd Rt frt tcs hi Rt frt tcs low Rt rear wheel spd S205 (i/p harn, right of steering column) S211 S279 (i/p harn, right of steering column) S286 (i/p harn, right of steering column) S287 Solid state Splice pack (sp205) (right side of steering column) Stop lamps fuse 15a Tan Torque from pcm Torque to pcm Trac off Warning system
ANTI-THEFT Anti-theft Wiring Diagram for Buick Regal GS 1998 List of elements for Anti-theft Wiring Diagram for Buick Regal GS 1998: 40 (in air cleaner assembly) powertrain control module 5v ref Abs bcm fuse 10a B12 Bat Bcm grd Body control module (behind left side of dash, left of steering column) Cluster fuse 10a Crank maxi fuse 40a Crank relay Crank sig Crank signal fuse 10a Data link connector (dlc) (under left side of dash) F10 Fuse block G202 (below dash, right side of steering column) Hot at all times Hot in off, run or start Hot in run, bulb test or start Hot in start Ign Ign 0 Ign 0 fuse 10a Ign ref lo Instrument cluster Key Nca Pcm- bcm fuse 10a Pnk Resistor pellet S211 S270 Security indicator Serial data Splice pack s205 (below dash, right side of steering column) Starter enable Starter solenoid Steering column lock & ignition key cylinder Transaxle range switch (on transaxle) Underhood electrical center (mounted on right strut tower)
BODY COMPUTER Body Computer Wiring Diagrams for Buick Regal GS 1998 List of elements for Body Computer Wiring Diagrams for Buick Regal GS 1998: 90 (below dash, right side of steering column) A10 A11 A12 Abs bcm fuse 10a Accessory Accessory time delay (rap) relay (behind right side of dash, mounted to underside of cross car beam) All door locks Anti-theft system B10 B11 B12 Bcm (battery) Bcm (ground) Bcm fuse 10a Body control module (bcm) (behind left side of dash, left of steering column) C10 C11 C12 C13 C14 C15 C16 Computer data lines system Courtesy light on (battery) Courtesy lights (battery) Crank Crank signal fuse 10a D10 D11 D12 D13 D14 D15 D16 Door ajar (battery) Door lock switch (lock) Door lock switch (unlock) Door locks (battery) Door locks fuse 20a Door locks system Doors (ground) Driver door ajar (battery) Driver door unlock Drl link Exterior lights system Fog light control (ground) Fuse block (right side of dash) G202 Headlights system Horn (ground) Horns system Hot at all times Hot in accy or run Hot in off, run or start Hot in run, bulb test or start Hot in start Ign 0 fuse 10a Ignition 0 Ignition 1 Ignition 1 park brake Ignition 1 performance Ignition key read (5v) Ignition ref low (ground) Inadv power bus fuse 15a Interior lights system Key in ignition Keyless entry link Nca Park light off (ground) Passenger doors unlock Pcm- bcm fuse 10a Performance shift switch Pnk Rap relay drive (ground) S211 S234 S269 S270 S283 Seat belt switch (ign 1) Serial data (class 2) Tan Theater dimming (ground) Theater dimming 1 Theater dimming 2 Trunk ajar Underhood accessory wiring junction block W/ rap Warning system
COMPUTER DATA LINES Computer Data Lines for Buick Regal GS 1998 List of elements for Computer Data Lines for Buick Regal GS 1998: 27 Body control module (behind left side of dash, left of steering column) Buick D12 Data clss 2 Data link connector (under left side of dash, right of steering column) E & c serial data E1 e & c serial data Electronic brake control module (below left side of dash, left of steering column) Fuse block G201 (behind right side of dash) G202 (below dash, right side of steering column) Hot at all times Htr-a/c control Inflatable restraint sensing & diagnostic module (below carpet, under right front seat) Instrument cluster Olds Powertrain control module (left front side of engine compt, in air cleaner assembly) Radio Radio- hvac fuse 15a Remote cd player S202 S211 S225 (dash harn, center of dash, 27cm from radio connector) S230 Splice pack sp205 (below dash, right of steering column) Tan Uart data
COOLING FAN Cooling Fan Wiring Diagram for Buick Regal GS 1998 List of elements for Cooling Fan Wiring Diagram for Buick Regal GS 1998: 19 A10 A11 All times C11 Cool fan 2 maxi fuse 30a Cool fan 1 maxi fuse 40a Cool fan 1 relay Cool fan 2 relay Cool fan 3 relay Engine coolant fan motor 1 Engine coolant fan motor 2 F12 G110 (left front of engine) Hi spd ctrl Hot at Low spd ctrl Powertrain control module (left front side of engine compt, in air cleaner assembly) S105 (engine harn, 13 cm from engine coolant fan 1 breakout) Underhood accessory wiring junction block
CRUISE CONTROL Cruise Control Wiring Diagram for Buick Regal GS 1998 List of elements for Cruise Control Wiring Diagram for Buick Regal GS 1998: 40 (front of left strut tower) (i/p harn, near steering column) (i/p harn, right of steering column) All times C12 Cruise control module Cruise control release switch (left side of dash) Cruise control switch Cruise fuse 10a Cruise inhibit Cruise inhibit input Cruise on input Cruise status D12 Disengage input Fuse block G202 (below dash, left of steering column) Ground Hot at Hot in run, bulb Ignition Off Powertrain control module (pcm) (front left side of engine compt) R/a Resume/accel input S205 S240 S281 S283 Set sw Set/coast input Stop lamp switch (brake pedal support bracket) Stop lamps fuse 15a Test or start Underhood accessory wiring junction block Vehicle speed input Vehicle speed sensor (vss) (lower right of engine, on transaxle) Vss out Vss return Vss signal
DEFOGGERS Defogger Wiring Diagram for Buick Regal GS 1998 List of elements for Defogger Wiring Diagram for Buick Regal GS 1998: 28 (behind right side of dash) g201 (left front door sill) g309 (left front side of trunk) g400 C1 (cj2) (c60/cj3) D nca Heated mirror fuse 10a Heater & a/c control Hot at all times Hot in run Hvac fuse 10a I/p fuse block Left outside rearview mirror Mirror defogger Nca On ind On/off momentary defogger switch Radio noise suppressor wire (in right "c" pillar) Rear window defogger Rear window defogger relay (behind right side of dash) Right outside rearview mirror Rr defog circuit breaker 30a S230 S233 S268 (i/p harn, near blwr motor) nca S504 S604 Solid state timer Under driver's seat)
ELECTRONIC POWER STEERING Electronic Power Steering Wiring Diagram for Buick Regal GS 1998 List of elements for Electronic Power Steering Wiring Diagram for Buick Regal GS 1998: 30 (below dash, left side of steering column) (buick) g202 (oldsmobile) g204 (left side of steering column) (i/p wiring harness, left side of dash, approximately 1 cm from electronic brake control module/electronic brake traction control control module (ebcm/ebtcm) breakout) s279 (oldsmobile) s279 (buick) (i/p wiring harness, right side of steering column, approximately 13 cm from g202 breakout) 1995 vftc c A11 Abs bcm fuse 10a Abs fuse 10a B12 Battery Computer data lines system Data Data link connector (dlc) (under left side of dash, right of steering column) Electronic brake control module/ electronic brake traction control module (ebcm/ebtcm) (below left side of dash, left of steering column) Electronic brake control relay (below left side of dash, mounted to multi-purpose bracket) Engine controls system Fuse block (behind right side of dash, in right door opening) Ground Hot at all times Hot in run, bulb test or start Ignition Msva actuator (left rear of engine compartment behind transaxle) Msva high Msva lo Nca Pnk Red Rly ctrl S287 Spliced pack sp205 (below dash taped in harness, on right side of steering column) Steering gear Sw bat input
ENGINE PERFORMANCE
3.8L 3.8L (VIN 1), Engine Performance Wiring Diagrams (1 of 4) for Buick Regal GS 1998 List of elements for 3.8L (VIN 1), Engine Performance Wiring Diagrams (1 of 4) for Buick Regal GS 1998: 82 (ign harn, top of eng, near ign control module) (lower left front of eng) (not used) (pin 10-11 not used) (pin 14-15 not used) (pin 21 & 23-27 not used) (pin 40-42 not used) (pin 49-52 not used) (pin 66-67 not used) (right side of eng) 1-2 ss valve control 18x ref signal 2-3 ss valve control 3x ref signal A/t iss sensor high A/t iss sensor low Camshaft position sensor (front of eng, above crankshaft pulley) Cmp signal Cooling fans system Crankshaft position sensor (front of eng, behind harmonic balancer) Cruise control system Cruise disable output Data link connector (under left side of dash, right of steering column) Ecm sense fuse 10a Ect sensor signal Egr val control (gnd) Elek ign fuse 15a Eng emis fuse 10a Evap purge val drviver F/injr fuse 15a F/pump speed ctrl rly Fuel inj #1 driver Fuel inj #2 driver Fuel inj #4 driver Fuel inj #5 driver Fuel inj #6 driver Fuse block (behind right side of dash, in right door opening) G110 G120 High speed fans control Hos1 low Hos2 low Hot at all times Hot in off, run bulb test, or start Hot in run, bulb test or start Iac coil b high Iat sensor ground Ic control Ign 0 fuse 10a Ignition control Ignition control module (top front of eng) Ignition wake up power Knock sensor bank 1 (left side of eng, in front of starter) Knock sensor bank 2 (right side of eng, below exhaust manifold) Knock sensor signal #1 Knock sensor signal #2 Low speed fans control Maf sensor signal Map sensor signal Pcm ground Pnk Pnk p Power (battery) Powertrain control module (left front side of eng compt, in air cleaner assembly) Ref low S106 S144 S145 Sensor ground Serial data (class 2) Spark plugs Splice pack sp250 Tan Tcc brake switch input Torque requested Tp sensor signal Tr switch input b Trans fluid press sw a Underhood electrical center (mounted to right strut tower) Vss high Vss low Vss output 3.8L (VIN 1), Engine Performance Wiring Diagrams (2 of 4) for Buick Regal GS 1998 List of elements for 3.8L (VIN 1), Engine Performance Wiring Diagrams (2 of 4) for Buick Regal GS 1998: 15 (lower left front of eng) Electronic brake control module/electronic brake traction control module (below left side of dash, left of steering column) Evaporative emissions canister purge solenoid valve (top right side of eng, near center of valve cover) Evaporative emissions canister vent solenoid valve (behind left side of rear fascia splash shield, in wheelwell) Fuel injectors G110 Pnk S105 S106 S109 Stop lamp switch (on brake pedal support c2 bracket) Tan Transaxle range switch (left side of eng compt, on transaxle) Underhood electrical center (mounted to right strut tower) Vehicle speed sensor (lower right side of eng compt, on transaxle) 3.8L (VIN 1), Engine Performance Wiring Diagrams (3 of 4) for Buick Regal GS 1998 List of elements for 3.8L (VIN 1), Engine Performance Wiring Diagrams (3 of 4) for Buick Regal GS 1998: 37 (body harn, under left rear seat) (eng harn, left side of eng compt, 19 cm from transaxle cover breakout) (eng harn, left top front of eng) (eng harn, near air cleaner, 4 cm from pcm breakout) (in exhaust system, rear of catalytic converter) heated oxygen sensor (ho2s) no2 (in right bank exhaust manifold) heated oxygen sensor (ho2s) no1 (lower left front of eng) (lower left side of eng, in oil pan) engine oil level indicator switch (on throttle body assembly) idle air control (iac) valve (top rear of eng, part of throttle body assembly) mass air flow sensor A tan A/c refrigerant pressure sensor (on left side of eng compt, on accumulator) B12 C pnk C1 underhood electrical center (mounted to right strut tower) D pnk Engine coolant temperature (ect) sensor (top left side of eng, below throttle body) Engine oil pressure indicator switch (lower right side of eng, above transaxle) Exhaust gas recirculation valve (top rear of eng, near throttle body) Fuel tank pressure sensor (in fuel tank) G110 Hot test or start Instrument cluster Intake air temperature (iat) sensor (left rear of eng compt, in air cleaner duct) Malfunction indicator lamp Manifold absolute pressure sensor (top right of eng, on front of intake manifold) Nca Oxy sen fuse 15a Pnk S105 S107 S122 S167 S409 Tan Throttle position sensor (on throttle body assembly) Trans fuse 10a 3.8L (VIN 1), Engine Performance Wiring Diagrams (4 of 4) for Buick Regal GS 1998 List of elements for 3.8L (VIN 1), Engine Performance Wiring Diagrams (4 of 4) for Buick Regal GS 1998: 91 (fuel pump prime terminal) (lower left front of eng) (pin 12-15 not used) (pin 30-32 not used) (pin 40-41 not used) (pin 47-48 not used) (pin 51-54 not used) (pin 6 & 8 not used) (pin 62 & 64-65 not used) (pin 70-75 not used) (right rear shelf) (torque delivered 1-2 shift solenoid 2-3 shift solenoid 5v ref a A/c compress clutch rly A/c refrig press signal A/c request signal A/t iss solenoid A11 Air conditioning system Auto transaxle fluid temperature sensor Automatic transaxle fluid pressure manual valve position switch Bat fuel pump fuse 15a Boost control sol driver Cluster fuse 10a Crank Crank signal fuse 10a Cruise control system Cruise engaged input D10 Ect sensor signal Egr pintle position signal Egr val ign positive volt Eng oil level ind in Eng oil press sensor sig Evap can vent sol driver F/pmp spd cont relay Fuel inj #3 driver Fuel level sensor Fuel level sensor input Fuel pump Fuel pump relay Fuel pump relay control Fuel pump resistor (outside of right front frame rail) Fuel tank Fuel tank press signal Fuse block (behind right side of dash, in right door opening) G110 G313 Gen terminal f output Gen terminal l output Ho2s 1 signal Ho2s 2 signal Hot at all times Hot in run, bulb test, or start Hot in start Iac coil a high Iac coil a low Iac coil b low Iat sensor signal Ign1-uh fuse 15a Ignition positive volt (2) Map sensor signal Mil control Pc sol valve high Pc sol valve low Pcm- bcm fuse 10a Pnk Powertrain control module (left front side of eng compt, in air cleaner assembly) Ps solenoid Red S106 S234 Sensor ground Starter enable control Starting/ charging system Supercharger bypass valve (top left of eng, above left valve cover) Tan Tcc release switch input Tcc sol valve control Tcc solenoid Tft sensor signal Tp sens or signal Tr switch input a Tr switch input c Tr switch input d Trans fluid press sw b Transaxle Underhood electrical center Underhood electrical center (mounted to right strut tower) 3.8L (VIN K), Engine Performance Wiring Diagrams (1 of 4) for Buick Regal GS 1998 List of elements for 3.8L (VIN K), Engine Performance Wiring Diagrams (1 of 4) for Buick Regal GS 1998: 80 (ign harn, top of eng, near ign control module) (lower left front of eng) (not used) (pin 10-11 not used) (pin 14-15 not used) (pin 21 & 23-27 not used) (pin 39-42 not used) (pin 49-52 not used) (pin 66-67 not used) (right side of eng) 1-2 ss valve control 18x ref signal 2-3 ss valve control 3x ref signal A/t iss sensor high A/t iss sensor low Camshaft position sensor (front of eng, above crankshaft pulley) Cmp signal Cooling fans system Crankshaft position sensor (front of eng, behind harmonic balancer) Cruise control system Cruise disable output Data link connector (under left side of dash, right of steering column) Ecm sense fuse 10a Ect sensor signal Egr pintle sensor gnd Egr val control (gnd) Elek ign fuse 15a Eng emis fuse 10a Evap purge val drviver F/injr fuse 15a Fuel inj #1 driver Fuel inj #2 driver Fuel inj #4 driver Fuel inj #5 driver Fuel inj #6 driver Fuse block (behind right side of dash, in right door opening) G110 G120 High speed fans control Hos1 low Hos2 low Hot at all times Hot in off, run bulb test, or start Hot in run, bulb test or start Iac coil b high Iat sensor ground Ic control Ign 0 fuse 10a Ignition control Ignition control module (top front of eng) Ignition wake up power Knock sensor bank 1 (left side of eng, in front of starter) Knock sensor bank 2 (right side of eng, below exhaust manifold) Knock sensor signal #1 Knock sensor signal #2 Low speed fans control Maf sensor signal Map sensor signal Pcm ground Pnk Pnk p Power (battery) Powertrain control module (left front side of eng compt, in air cleaner assembly) Ref low S106 S144 S145 Serial data (class 2) Spark plugs Splice pack sp250 Tan Tcc brake switch input Tp sensor signal Tr switch input b Trans fluid press sw a Underhood electrical center (mounted to right strut tower) Vss high Vss low Vss output 3.8L (VIN K), Engine Performance Wiring Diagrams (2 of 4) for Buick Regal GS 1998 List of elements for 3.8L (VIN K), Engine Performance Wiring Diagrams (2 of 4) for Buick Regal GS 1998: 14 (lower left front of eng) Evaporative emissions canister purge solenoid valve (top left side of eng, near center of valve cover) Evaporative emissions canister vent solenoid valve (behind left side of rear fascia splash shield, in wheelwell) Fuel injectors G110 Pnk S105 S106 S109 Stop lamp switch (on brake pedal support c2 bracket) Tan Transaxle range switch (left side of eng compt, on transaxle) Underhood electrical center (mounted to right strut tower) Vehicle speed sensor (lower right side of eng compt, on transaxle) 3.8L (VIN K), Engine Performance Wiring Diagrams (3 of 4) for Buick Regal GS 1998 List of elements for 3.8L (VIN K), Engine Performance Wiring Diagrams (3 of 4) for Buick Regal GS 1998: 37 (body harn, under left rear seat) (eng harn, left side of eng compt, 19 cm from transaxle cover breakout) (eng harn, left top front of eng) (eng harn, near air cleaner, 4 cm from pcm breakout) (in exhaust system, rear of catalytic converter) heated oxygen sensor (ho2s) no2 (in right bank exhaust manifold) heated oxygen sensor (ho2s) no1 (lower left (lower left side of eng, in oil pan) engine oil level indicator switch (lower right side of eng, above transaxle) engine oil pressure indicator switch (on throttle body assembly) idle air control (iac) valve (top rear of eng, part of throttle body assembly) mass air flow sensor A tan A/c refrigerant pressure sensor (on left side of eng compt, on accumulator) B12 Buick C pnk D pnk Engine coolant temperature (ect) sensor (top left side of eng, below throttle body) Exhaust gas recirculation valve (top rear of eng, near throttle body) Front of eng) Fuel tank pressure sensor (in fuel tank) G110 Indicator lamp Instrument cluster Intake air temperature (iat) sensor (left rear of eng compt, in air cleaner duct) Malfunction Manifold absolute pressure sensor (top right of eng, on front of intake manifold) Nca Olds Pnk S105 S107 S122 S167 S409 Tan Throttle position sensor (on throttle body assembly) 3.8L (VIN K), Engine Performance Wiring Diagrams (4 of 4) for Buick Regal GS 1998 List of elements for 3.8L (VIN K), Engine Performance Wiring Diagrams (4 of 4) for Buick Regal GS 1998: 87 (lower left front of eng) (pin 12-15 not used) (pin 30-32 not used) (pin 40-41 not used) (pin 47-48 not used) (pin 51-54 not used) (pin 62 & 64-65 not used) (pin 70-75 not used) (pin 8-9 not used) (right rear shelf) 1-2 shift solenoid 2-3 shift solenoid 5v ref a A/c compress clutch rly A/c refrig press signal A/c request signal A/t iss solenoid A11 Air conditioning system Auto transaxle fluid temperature sensor Automatic transaxle fluid pressure manual valve position switch Cluster fuse 10a Crank Crank signal fuse 10a Cruise control system Cruise engaged input D10 Ect sensor signal Egr pintle position signal Egr val ign positive volt Eng oil level ind in Eng oil press sensor sig Evap can vent sol driver F/pmp fuse 15a F/pump relay Fuel inj #3 driver Fuel level sensor Fuel level sensor input Fuel pump Fuel pump relay control Fuel tank Fuel tank press signal Fuse block (behind right side of dash, in right door opening) G110 G313 Gen terminal f output Gen terminal l output Ho2s 1 signal Ho2s 2 signal Hot at all times Hot in run, bulb test or start Hot in run, bulb test, or start Hot in start Iac coil a high Iac coil a low Iac coil b low Iat sensor signal Ignition positive volt (2) Map sensor signal Mil control Oxy sen fuse 15a Pc sol valve high Pc sol valve low Pcm- bcm fuse 10a Pnk Powertrain control module (left front side of eng compt, in air cleaner assembly) Ps solenoid Red S106 S234 Sensor ground Starter enable control Starting/ charging system Tan Tcc release switch input Tcc sol valve control Tcc solenoid Tft sensor signal Tp sens or signal Tr switch input a Tr switch input c Tr switch input d Trans fluid press sw b Trans fuse 10a Transaxle Underhood electrical center Underhood electrical center (mounted to right strut tower)
EXTERIOR LIGHTS Backup Lamps Wiring Diagram for Buick Regal GS 1998 List of elements for Backup Lamps Wiring Diagram for Buick Regal GS 1998: 14 (body harness, under left rear seat) s424 F1 c1 F10 G313 (right side of rear shelf) Hot at all times Inside rearview mirror (electro- chromic) Left backup lamp R/cmpt rel fuse 7.5a Right backup lamp S405 (trunk harness, center of trunk lid) S415 Transaxle range switch (left side of engine compt, on transaxle) Underhood electrical center Underhood electrical center (mounted to right strut tower) Exterior Lamps Wiring Diagram for Buick Regal GS 1998 List of elements for Exterior Lamps Wiring Diagram for Buick Regal GS 1998: 86 (body harness, right side of trunk, 23cm from body to trunk lid harness breakout, above right wheelwell) s408 (chmsl harness, center of rear window trim panel, 7cm from chmsl lamps breakout) s417 (on parking brake assy) park brake indicator switch A c1 A10 A11 A12 A12 c3 A13 A14 A15 Anti-lock brakes system B c1 Body control module (behind left side of dash) C2 f12 Center high mounted stoplamp (chmsl) Cornering lamp signal Cruise control system D11 D12 Daytime running lamps (drl) ambient light sensor (top center of dash, at base of windshield) Daytime running lamps control module (behind left side of dash) Drl fuse 10a E10 E11 E12 E13 F11 Frt pk lps fuse 10a Fuse block Fuse block (behind right side of dash) G108 (left side of front end upper tie bar) G109 (right side of front end upper tie bar) G204 (below dash, left side of steering column) G204 (left side of strg column) G313 (right side of rear shelf) G400 (left front side of trunk) Hazard Hazard fuse 15a Hazard lamp and turn signal lamp flasher (below left side of dash) Head Headlamp switch Hot at all times Hot in run Hot in run, bulb test or start Hvac fuse 10a Instrument cluster Left Left headlamp Left rear park lamps Left rear side marker lamp Left tail/ turn/ stop- lamp Left turn indicator License lamps Nca Normal Off Park Park lps fuse 20a Park/ turn signal lamp Pnk Power distribution Right Right headlamp Right rear park lamps Right rear side marker lamp Right side of steering column, 12cm from ground breakout) s291 Right tail/ turn/ stop- lamp Right turn indicator S123 S124 S205 (dash harness, near steering column) S233 S277 (dash harness, right side of steering column, near electrical connector) S283 S402 S403 S416 Side marker lamp Stop fuse 15a Stoplamp switch (on brake pedal support bracket) Tail lps fuse 15a Turn fuse 10a Turn signal switch Underhood electrical center Underhood electrical center (mounted to right strut tower)
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 2) for Buick Regal GS 1998 List of elements for Ground Distribution Wiring Diagram (1 of 2) for Buick Regal GS 1998: 85 (ashtray harness, inside ashtray) (c60/cj3) (century) (cj2) (engine harness, 4 cm from engine coolant fan jumper breakout) (engine harness, 7 cm from pcm breakout) (front console harness, 65 cm from accessory power receptacle breakout) (i/p harness, 8 cm from ebcm breakout) (regal) A/c clu diode A/c compressor clutch coil Accessory power receptacle (regal) Ashtray lamp (century) Automatic transaxle control position indicator bulb (regal) Battery Blower motor control module Blower motor resistor Brake fluid level indicator switch C11 C60/cj3 Century Cigar lighter (century) Cigar lighter (regal) Cj2 Console compartment lamp (regal) Cool fan 2 relay Data link connector Door lock relay Engine coolant level indicator module Engine oil level indicator switch Engine oil pressure indicator switch F/pump relay G101 (right side of engine compartment, at base of battery) G102 (at base of left strut tower) G108 (left side of front end upper tie bar) G109 (right side of front end upper tie bar) G120 (regal) (right side of engine) G129 (century) (on transaxle stud) G129 (on transaxle stud) G201 (behind right side of dash) Heated oxygen sensor 1 Heated oxygen sensor 2 Heater a/c control Horns I/p compartment lamp switch Ign main relay Ignition control module Inflatable restraint sensing and diagnostic module Inflatable restraint steering wheel coil Left cornering lamp (regal) Left electric actuator Left engine coolant fan motor Left fog lamp (regal) Left headlamp Left park/ turn lamp Left radio control switch Left side marker lamp Mass air flow sensor Nca Power drop connector Powertrain control module Regal Right cornering lamp (regal) Right electric actuator Right engine coolant fan motor Right fog lamp (regal) Right headlamp Right park/ turn lamp Right radio control switch Right side marker lamp S105 S106 S123 (forward lamp harn, bhind right headlamp) S124 (forward lamp harn, below left headlamp) S230 (i/p harness, 18 cm from radio breakout) S284 S295 S335 Steering column electric park lock Tranaxle range switch Underhood accessory wiring junction block Underhood lamp Windshield washer pump Windshield washer solvent level switch Windshield wiper motor Ground Distribution Wiring Diagram (2 of 2) for Buick Regal GS 1998 List of elements for Ground Distribution Wiring Diagram (2 of 2) for Buick Regal GS 1998: 107 (ashtray harn inside ashtray) s295 (body harness, 4 cm from right rear speaker breakout) (body harness, below driver's seat) (body harness, right side of trunk) (chmsl harness, 5 cm from chmsl breakout) (courtesy lamp harness, 50 cm from right sunshade mirror) (driver's seat harn, below driver's seat) (left tail lamp harn) (right front door harness, 8 cm from window switch breakout) (right tail lamp harness) A12 Body control Body control module Body harn, right side of trunk s418 C201 Center high mounted stop lamps Cruise control module Data link connector Daytime running lamp control module Driver information display switch Driver seat adjuster switch Driver seat back cushion cover Driver seat cushion cover Driver seat heater control module Driver seat heater switch E16 Electronic brake traction control module Electronic traction control switch Fog lamp switch Fuel pump Fuel tank Fuse block G202 (on steering column) G204 (below dash, left side of steering column) G205 (below dash, right side of steering column) G309 (left front door sill) G313 (right side of rear shelf) G400 (left front side of trunk) Hazard lamp/ turn signal lamp flasher Headlamp dimmer switch Headlamp switch Ignition key alarm switch Inside rearview mirror (day-night) Inside rearview mirror (lighted) Instrument cluster Left backup lamp Left front door lock Left front door lock switch Left front window switch Left lighted visor mirror lamp Left outside rearview mirror Left rear door lock Left rear park lamp Left rear side marker lamp Left roof rail courtesy/ reading lamp Left tail/ stop/turn signal lamp Low tire reset switch Mobile telephone amplifier Mobile telephone handset Module Nca Outside remote control rearview mirror switch Passenger seat adjuster switch Passenger seat back cushion cover Passenger seat cushion cover Passenger seat heater control module Passenger seat heater switch Performance shift switch Radio Radio antenna module Rear compartment lid ajar switch Rear compartment lid release actuator Rear license lamp Rear window defogger grid Remote cd changer Remote control door lock receiver Right backup lamp Right front door lock Right front door lock switch Right front window switch Right lighted visor mirror lamp Right outside rearview mirror Right rear door lock Right rear park lamp Right rear side marker lamp Right roof rail courtesy/ reading lamp Right tail/ stop/turn signal lamp S211 (i/p harness, 20 cm from i/p breakout) S283 (i/p harness, 4 cm from headlamp switch breakout) S301 (body harn, next to passenger's seat) S303 S330 (driver's seat harn, below driver's seat) S333 S385 S402 S403 S406 S414 S416 S430 S604 Seat belt switch Sunroof module Tan W/ cell phone W/ dc4 W/ dd8
HEADLIGHTS Headlight Wiring Diagram for Buick Regal GS 1998 List of elements for Headlight Wiring Diagram for Buick Regal GS 1998: 73 (i/p harn, right side of steering column, approx 23cm from cluster breakout) s221 (left side of front end upper tie bar) (right side of front end upper tie bar) A10 B7 pnk Battery Body control module (left of steering column) Daytime running lamps ambient light sensor (top center of dash) Daytime running lamps control module (behind left side of dash) Drl fuse 10a E1 c2 E11 Exterior lights system F10 F2 c3 Flash Fog lamp switch Fog lp ctrl Fog lp relay Frt park lps fuse 10a Fuse block (behind right side of dash) G108 G109 G204 (below dash, left side of steering column) Gnd Hdlp l fuse 15a Hdlp r fuse 15a Head Headlamp dimmer switch Headlamp switch Headlamps on High High beam High beam indicator Hot at all times Hot in run Hot in run, bulb test and start Hvac fuse 10a Ign 1 Ign 2 Illum Instrument cluster Interior lights system Left fog lamp Left headlamp Lf turn-sig feed Lf turn-sig sw out Light sensor in Light sensor sig Low Low beam Lp park fuse 20a Off P-brake in P-brake sw alarm Park Park brake indicator switch Park lamp sw out Park lp off Pnk Radio- hvac fuse 15a Rf turn-sig feed Rf turn-sig sw out Right fog lamp Right headlamp S123 S124 S202 S277 (i/p harn, right side of steering column, approx 4cm from splice pack breakout) S283 Tan Underhood accessory wiring junction block (mounted to right strut tower) Warning system (body control module)
HORN Horn Wiring Diagram for Buick Regal GS 1998 List of elements for Horn Wiring Diagram for Buick Regal GS 1998: 21 (behind right side of front bumper) (steering column) Body control module (bcm) G109 (right side of front end upper tie bar) G201 (behind right side of dash) High note horn Horn fuse 15a Horn out- put Horn relay Horn switch Horns Hot at all times Inflatable restraint steering wheel module Low note horn Red S123 S230 Slip ring Turn signal cancel cam Turn signal switch Underhood electrical center (mounted on right front strut tower)
INSTRUMENT CLUSTER Instrument Cluster Wiring Diagram for Buick Regal GS 1998 List of elements for Instrument Cluster Wiring Diagram for Buick Regal GS 1998: 117 (below dash, left side of steering column) g202 (dash harn, 4 cm from ebtcm breakout) (not used) (right side of engine compt, on strut tower) underhood accessory wiring junction block A10 A11 A12 Air bag ind Antilock ind Antilock ind ctrl B10 B11 B12 Battery Body control module (behind left side of dash, left of steering column) Brake fluid level indicator switch (in brake fluid reservoir) Brake ind Brake ind ctrl Brk ind Change oil soon ind Change oil soon ind ctrl Charge ind Charge ind ctrl Cluster fuse 10a Coolant temp ind Coolant temp ind ctrl Coolant temperature gauge Crank Crank signal fuse 10a Crs sig Cruise control module (front of left strut tower) Cruise ind Cruise ind ctrl Cruise sig in D12 Data link connector (under left side of dash, right of steering column) Dim Door ajar ind Door ajar ind ctrl Driver information display switch E/m Electronic brake/traction control module (below left side of dash, left of steering column) Engine controls system Engine coolant level indicator module (mounted on right side of radiator) Exterior lights system Fuel gauge Fuse block G102 (at base of left strut tower) G129 (on transaxle stud) G201 (behind right side of dash) G202 (on steering column) Ground Heater-a/c control High beam ind Hot at all times Hot in off, run or start Hot in run, bulb test and start Hot in start Ign Ign 0 fuse 10a Illumination Instrument cluster Interior lights system Left turn ind Left turn lamp ctrl Low coolant ind Low fuel ind Low fuel ind ctrl Low oil ctrl Low oil ind Low tire ind Low tire ind ctrl Low trac ind Low trac ind ctrl Low washer fluid signal Low washer ind Low wshr ind ctrl Malfunction indicator lamp Mode Oil pres ind ctrl Oil pressure ind Perf shift ind Perf shift ind ctrl Pk lps Pnk Powertrain control module (left front side of engine compt, in air cleaner assy) Prndl position ind ctrl Radio, hvac rfa fuse 15a Reset Right turn ind Right turn lamp ctrl S106 S202 S211 S230 S234 S270 S281 (dash harn, right of steering column) S283 S284 S286 Seat belt ind Seat belt ind ctrl Security ind Security ind ctrl Serial data Service vehicle soon ind Service vehicle soon ind (amber) Service vehicle soon ind ctrl Speedometer Splice pack (sp205) (below dash, right of steering column) Srl data Tachometer Trac off ind Trac off ind ctrl Vss signal Windshield washer solvent level switch (right front of engine compt)
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram for Buick Regal GS 1998 List of elements for Courtesy Lamps Wiring Diagram for Buick Regal GS 1998: 76 (body harn, below right front seat) s322 (dd8) (dc4) (dd8) (dc4) b (i/p harn, right side of dash) (i/p harn, right side of steering column) (quarter courtesy and reading lamp harn, approx 5 cm from 8-pin in-line conn, behind right "c" pillar) Body control module (bcm) (behind left side of dash, left of steering column) C16 Console compartment lamp Console compartment lamp switch Court lps (grd) Court lps on D15 D16 Dome Dome lamp Door ajar Driver dr ajar Exterior lights system Frt park lps fuse 10a Fuse block G102 (at base of left strut tower) G201 (behind right side of dash) G204 (below dash, left side of steering column) G309 (left front door sill) G313 (right side of rear shelf) Head Headlamp switch Hot at all times Hot in accy and run I/p compart- ment lamp switch Inside rear view mirror Left front door ajar indicator switch Left front door courtesy lamp (2 bulbs) Left i/p courtesy lamp Left lighted visor mirror lamp Left rear door ajar indicator switch Left roof rail courtesy/ reading lamp Lp park fuse 20a Off Panel dimming fuse 7.5a Park Power drop fuse 10a Rear compartment lamp Rear compartment courtesy lamp switch Regal Right front door ajar indicator switch Right front door courtesy lamp (2 bulbs) Right i/p courtesy lamp Right lighted visor mirror lamp Right rear door ajar indicator switch Right roof rail courtesy/ reading lamp S214 (i/p harn, right side of steering column) S230 S267 S277 S283 S284 S303 S320 (body harn, below right front seat) S321 (body harn, under right front door pillar) S335 S384 (quarter courtesy and reading lamp harn, approx 25 cm from left lighted visor mirror breakout) S385 S386 (quarter courtesy and reading lamp harn, approx 35 cm from 8-pin in-line conn, behind right "c" pillar) S387 S430 S504 S604 Tail lamps fuse 15a Theater dim (grd) Theater dim 1 Theater dim 2 Trunk ajar (bat) Under- hood lamp Underhood electrical center Instrument Illumination Wiring Diagram for Buick Regal GS 1998 List of elements for Instrument Illumination Wiring Diagram for Buick Regal GS 1998: 60 (body harn, below right front seat) s302 (c60/cj3) (cj2) (cj2) c16 (i/p harn, right of steering column) s277 (i/p harn, right side of dash) Ashtray lamp (century) Automatic transaxle control position indicator bulb Dome Driver seat heater and traction control switch Driver seat heater switch E16 Electronic traction control switch (regal) Fog lamp switch Fuse block G201 (behind right side of dash) G204 (below dash, left side of steering column) G205 (below dash, right side of steering column) G309 (left front door sill) Grd Head Headlamp switch Heater- a/c control High Hot at all times Illum Inflatable restraint steering wheel module coil Instrument cluster Left door lock switch Left front window switch Low Lp park fuse 20a Off Outside remote control rear view mirror switch Panel dimming fuse 7.5a Park Passenger seat heater switch Radio Radio control switches Red Right door lock switch Right front window switch S211 S230 S241 (i/p harn, below radio) S267 S283 S295 S303 S504 S506 (left front door harn, in left front door) S604 S606 (right front door harn, in right front door) Strg whl cont fuse 2a Tail lamps fuse 15a Underhood electrical center Vf dim dis sig Vf dim sig W/ heated seats W/o heated seats
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 3) for Buick Regal GS 1998 List of elements for Power Distribution Wiring Diagram (1 of 3) for Buick Regal GS 1998: 98 (body harn, right floor near passen- ger's seat) (i/p harness, 21 cm from bulkhead grommet) s275 (i/p harness, right of steering column) A/c clu fuse 10a A/c clu relay Abs-bcm fuse 10a Accessory power receptacle B (century) (regal) c B12 Bat 1 maxi fuse 60a Bat 2 maxi fuse 60a Bat 3 maxi fuse 60a Battery Blower motor control module Blower motor resistor Body control module C12 C201 C60/cj3 Cd changer fuse 10a Century Cigar lighter Cigar ltr fuse 20a Cj2 Cool fan 1 maxi fuse 40a Cool fan 1 relay Cool fan 2 maxi fuse 30a Cool fan 2 relay Cool fan 3 relay Crank maxi fuse 40a Crank relay Data link connector Daytime running lamp control module Door lock relay Door locks fuse 20a Driver seat heater control module Driver's seat adjuster switch Ecm fuse 10a Electronic brake control module/ electronic brake traction control module Electronic brake control relay F/pmp fuse 15a F/pmp relay From a remote battery stud (diagram 1 of 3) From bat 2 maxi fuse (diagram 1 of 3) Fuse block Fusible link (10 ga-rust) G201 (behind right side of dash) Gen fuse 10a Generator Hazard fuse 15a Hdlp l fuse 15a Hdlp r fuse 15a Headlamp switch Heater- a/c control High blower fuse 25a Horn fuse 15a Horn relay Inadv power bus fuse 15a Instrument cluster L heated seat fuse 15a Left headlamp Lp park fuse 20a Mobile telephone amplifier Mobile telephone handset Nca Outside remote control rearview mirror switch Passenger seat heater control module Passenger's seat adjuster switch Power mirrors fuse 10a Power seats circuit breaker 30a Powertrain control module R heated seat fuse 15a R/cmpt rel fuse 7.5a Radio Radio- hvac fuse 15a Rear defogger circuit breaker 30a Rear window defogger relay Red Regal Remote battery stud Remote cd changer Remote control door lock receiver Right headlamp S202 S269 (i/p harness, near blower motor) S319 S335 S336 Starter Stop lamp switch Stop lamps fuse 15a To accessory time delay relay (diagram 2 of 3) To hdlp l fuse (diagram 1 of 3) To high blower fuse (diagram 1 of 3) To ign 2 maxi fuse (diagram 2 of 3) Transaxle range switch Turn signal switch Underhood accessory wiring junction block Power Distribution Wiring Diagram (2 of 3) for Buick Regal GS 1998 List of elements for Power Distribution Wiring Diagram (2 of 3) for Buick Regal GS 1998: 87 (body harness, top of floor tunnel between front seats) (body harness, under left side of rear seat) (cj2) (cj2) (c60/cj3) (i/p harn, behind right side of dash) (i/p harness, 4 cm from radio breakout) (i/p harness, near blower motor) (i/p harness, near steering column) (i/p harness, right side of steering column) A nca Accessory time delay relay (behind i/p compt, under- side of cross- car beam) Accy Automatic transaxle control Bcm fuse 10a Body control module Body control module (below left side of dash) Bulb test C13 C201 C5 c (c60/cj3) Console compt lamp switch (regal) Crank signal fuse 10a Cruise control module Cruise control release switch Cruise control switch Cruise fuse 10a Daytime running lamp control module Driver seat heater switch From gen d fuse (diagram 1 of 3) From ignition switch (diagram 2 of 3) From inadv power bus fuse (diagram 1 of 3) Fuse block Heater- a/c control Hvac fuse 10a Ign 0 fuse 10a Ign1 maxi fuse 30a Ign2 maxi fuse 40a Ignition switch Inflatable restraint steering wheel coil Inside rearview mirror Instrument cluster Left electric actuator Left front window switch Left radio control switches Lock Low blower fuse 20a Mobile telephone handset Nca Nca a Off Park lock fuse (regal) 10a Passenger seat heater switch Pnk Power drop fuse 10a Powertrain control module Pwr windows pwr sunroof circuit breaker 30a Radio Radio fuse (w/o rap) 2a Radio fuse 2a Rear window defogger relay Red Right electric actuator Run S220 S233 S234 S240 S249 S263 S270 S323 S410 Start Sunroof module To crank signal fuse (diagram 2 of 3) To ign main relay (diagram 3 of 3) To low blower fuse (diagram 2 of 3) To s228 (diagram 3 of 3) Under- hood accessory wiring junction block Underhood accessory wiring junction block Underhood accessory wiring junction box Vacuum electric solenoid W/ rap W/o rap Wind- shield wiper/ washer switch Windshield wiper motor Wiper fuse 25a Power Distribution Wiring Diagram (3 of 3) for Buick Regal GS 1998 List of elements for Power Distribution Wiring Diagram (3 of 3) for Buick Regal GS 1998: 54 (century) (engine harn, top left of engine) (regal) (injector harn, 2 cm from injector 2 breakout) (century) (i/p harness, right of steering column) (i/p harness, right side of dash) (not used) (regal) A/c clu relay Abs fuse 10a Air bag fuse 15a Automatic transaxle Automatic transaxle control B12 Body control module Btsi park lock fuse 10a (regal) C12 Cluster fuse 10a Crank relay Daytime runnning lamp control module Drl fuse 10a Electronic brake control module/ electronic brake traction control module Electronic brake control relay Electronic traction control switch Elek ign fuse 15a Eng emis fuse 10a Evaporative emissions canister purge solenoid valve Evaporative emissions canister vent solenoid valve F/injr fuse 15a From ign1 e maxi fuse (diagram 2 of 3) From ignition switch (diagram 2 of 3) Fuel injector Fuse block G129 (on transaxle) Heated oxygen sensor 1 Heated oxygen sensor 2 Ign main relay Ignition control module Inflatable restraint sensing and diagnostic module Instrument cluster Mass air flow sensor Nca Oxy sen fuse 15a Pcm-bcm fuse 10a Pnk Powertrain control module S106 S109 S228 S287 Stop lamp switch Supercharger bypass valve (3.8l vin 1) Trans fuse 10a Turn signal switch Turn signals fuse 10a Underhood accessory wiring junction block
POWER DOOR LOCKS Power Door Lock Wiring Diagram for Buick Regal GS 1998 List of elements for Power Door Lock Wiring Diagram for Buick Regal GS 1998: 46 (body harn, center floor on left side of tunnel) s315 (body harness, below right door speaker, 44cm from power door breakout) s314 Abs-bcm fuse 10a All drs lock Battery Battery (b+) Body control module (behind left side of dash, left side of steering column) C14 C15 D12 D13 Door lock fuse 20a Door lock relay (behind dash, attached to cross- car body beam) Doors lock Doors unlock Driver unlk Fuse block (right side of dash) G201 (behind right side of dash) G204 (behind dash, left side of steering column) G205 (behind dash, right side of steering column) G309 (left front door sill) Ground Hot at all times Interior lights system Left front door lock actuator Left front door lock switch Left rear door lock actuator Lock Pass drs unlk Radio-hvac fuse 15a Remote control door lock receiver (rke) (left side of dash, right side of cluster) Rfa link Right front door lock actuator Right front door lock switch Right rear door lock actuator Rr lid release S202 S211 S230 S269 S283 S303 S504 Tan Trunk, tailgate, fuel doors system Unlock
POWER MIRRORS Photochromic Mirror Wiring Diagram for Buick Regal GS 1998 List of elements for Photochromic Mirror Wiring Diagram for Buick Regal GS 1998: 28 (body wiring harness, approximately 6 cm from grommet, under left rear seat) s424 (right side of rear shelf) g313 (windshield side) ambient sensor A6 c2 B c1 C1 f6 Fuse block (behind right side of dash, in right door opening) Gnd Headlight sensor (mirror side) Hot at all times Hot in run Hvac fuse 10a Inside rearview mirror (day-night) Interior lights system Left mirror switch Mirror on Off R/cmpt rel fuse 7.5a Resets to daytime high reflectivity in reverse Right mirror switch S233 S323 S385 Solid state Transaxle range switch (left side of engine compart- ment, on transaxle) Underhood (u/h) electrical center (mounted to right strut tower) W/ heated seats W/o heated seats Power Mirrors Wiring Diagram for Buick Regal GS 1998 List of elements for Power Mirrors Wiring Diagram for Buick Regal GS 1998: 21 (1998) (1999) (left front door sill) g309 Buick Driver's seat) g309 Ecb Fuse block Hot at all times Interior lights system Left mirror Left outside rearview mirror Mirror motor pack Nca Olds- mobile Outside remote control rearview mirror switch Power mirrors fuse 10a 2a Right mirror Right outside rearview mirror Right/ left motor S504 Up/ down motor
POWER SEATS 6-Way Power Seat Wiring Diagram for Buick Regal GS 1998 List of elements for 6-Way Power Seat Wiring Diagram for Buick Regal GS 1998: 23 (left front door sill) Back Down Driver seat adjuster motor assembly Driver seat adjuster switch Entire seat For- ward Front height Front passenger seat adjuster motor assembly Front passenger seat adjuster switch Front vertical adjuster motor Fuse block G309 Horizontal adjuster motor Hot at all times Nca Power seats circuit breaker 30a Rear height Rear vertical adjuster motor S303 S326 S330 Tan Heated Seats Wiring Diagram for Buick Regal GS 1998 List of elements for Heated Seats Wiring Diagram for Buick Regal GS 1998: 29 Driver heated seat back element Driver heated seat control module Driver heated seat cushion cover Driver heated seat cushion element Driver heated seat switch Driver heated seat thermistor Front passenger heated seat control module G309 (left front door sill) Ground Hot at all times Hot in run Hvac fuse 10a I/p fuse block Interior lights system Lh heated seat fuse 15a Lo/hi input Nca On input Passenger heated seat back element Passenger heated seat cushion cover Passenger heated seat cushion element Passenger heated seat switch Passenger heated seat thermistor Pnk Rh heated seat fuse 15a S303 S323 S333 Sensor input
POWER TOP/SUNROOF Power Top/Sunroof Wiring Diagrams for Buick Regal GS 1998 List of elements for Power Top/Sunroof Wiring Diagrams for Buick Regal GS 1998: 24 (not used) Battery Close Fuse block (behind right side of dash, in right door opening) G313 (right side of rear shelf) Gnd Hot w/ acc time delay (rap) relay energized Limit switch module (center rear of sun roof module) Ls1 Ls2 Ls3 Nca Open Pos 1 Pos 2 Pos 3 Power windows system Pwr windows pwr sun roof circuit breaker 30a Red S410 S414 Sun roof module (right corner of sun roof) Sunroof actuator (center rear of sun roof module) Sunroof switch
POWER WINDOWS Power Window Wiring Diagram, 4 Door for Buick Regal GS 1998 List of elements for Power Window Wiring Diagram, 4 Door for Buick Regal GS 1998: 44 (buick) (buick, olds) (buick: body harn, on floor under driver's seat) (chev, pontiac) (chev: crossbody harn below right front seat) (olds: body harn, center of floor behind front seats) (oldsmobile) (pontiac: body harn, on floor near center of vehicle) Buick oldsmobile Buick, olds chevrolet Chevrolet Down Ecb Express Express down module Fuse block (behind right side of dash, in right) door opening) G309 (left front door sill) G316 (right front door sill) Hot in acc, run or during rap Hot in run Illumination lamp Interior lights system Left front Left front window motor Left front window switch Left rear Left rear window motor Left rear window switch Lock out switch Pontiac Power window circuit breaker 20a Pwr window pwr sunroof circuit breaker 30a Right front Right front window motor Right front window switch Right rear Right rear window motor Right rear window switch S303 S307 S310 s410 S504 S604 Tan
RADIO Radio Wiring Diagrams for Buick Regal GS 1998 List of elements for Radio Wiring Diagrams for Buick Regal GS 1998: 71 A c2 Ant in Antenna module B c2 Bare Battery Cd changer fuse 10a Cd com Cd in Data link connector (right of steering column) Dimmer sig Drain E & c data E10 E11 E12 E13 E14 E15 E16 F10 F11 F12 F13 F14 F15 F16 Fixed mast antenna Fuse block Fused feed G202 (behind dash, right of steering column) Ground Hot at all times Hot in run, acc or w/ retained accessory power Inflatable restraint steering wheel control module Interior lights system Left front door speaker Left front tweeter Left rear speaker Left steering wheel radio controls Lf spkr Lr spkr Lt cd sig Nca Radio Radio antenna module (on rear window header panel) Radio fuse 2a Radio pwr Radio, hvac fuse 15a Rap pwr Rear window antenna grid Remote cd player Rf spkr Right front door speaker Right front tweeter Right rear speaker Right steering wheel radio controls Rr spkr Rt cd sig S202 S239 Strg ctrl Sw 1 Sw 2 Sw 3 Sw 4 Sw 5 Sw 6 Sw 7 Sw 8 Tan
SHIFT INTERLOCKS Shift Interlock Wiring Diagram for Buick Regal GS 1998 List of elements for Shift Interlock Wiring Diagram for Buick Regal GS 1998: 21 (on transaxle stud) A12 Automatic transaxle control (btsi) (center of console assembly) Automatic transmission shift lock control actuator (btsi) (in column shift) Btsi park lock fuse 10a Btsi solenoid C11 Century, intrigue G129 Hot in run, bulb test or start I/p fuse block (right side of dash, in right door opening) Park lock solen- oid Pnk Pnk a Regal Regal century, intrigue S105 S106 (intrigue) (regal, century) Stoplamp switch (open when brake pedal depressed) (on brake pedal support) Transaxle range switch (on top right rear of transaxle) Underhood fuse block
STARTING/CHARGING Charging Wiring Diagram for Buick Regal GS 1998 List of elements for Charging Wiring Diagram for Buick Regal GS 1998: 28 (not used) a A8 c1 B12 Battery Charge ind Cluster fuse 10a Computer data lines Fuse block (behind right side of dash) Fusible link (10 ga- rust) G101 (right side of engine compt, at base of battery) G129 (left of starter, on transaxle stud) Gen fuse 10a Gen. term. f monitor Gen. term. l output c2 Hot at all times Hot in run, bulb test or start Instrument cluster L generator P b+ Pnk Power distribution system Powertrain control module (pcm) (left side of engine compt, in air cleaner assembly) Red Ser. data class 2 c1 Solid state Splice pack (s205) (below dash, right of steering column) Starter solenoid Underhood accessory wiring junction block (on right strut tower) Starting Wiring Diagram for Buick Regal GS 1998 List of elements for Starting Wiring Diagram for Buick Regal GS 1998: 34 Accy B red Battery Bulb test Charging circuit (fuse link) Crank maxifuse 40a Crank relay Crank signal Crank signal fuse 10a Fuse block (behind right side of dash) G101 (right side of engine compt, at base of battery) G129 (left of starter, on transaxle stud) Hold- in coil Hot at all times Ign main 1 maxifuse 40a Ignition switch Lock Nca Off Pcm- bcm fuse 10a Pnk Powertrain control module (pcm) (left side of engine compt, in air cleaner assembly) Pull- in coil Red Remote battery stud Run S228 S234 Start Starter enable control Starter motor Starter solenoid Transaxle range switch (on transaxle) Underhood accessory wiring junction block (on right strut tower)
SUPPLEMENTAL RESTRAINTS Supplemental Restraint Wiring Diagram for Buick Regal GS 1998 List of elements for Supplemental Restraint Wiring Diagram for Buick Regal GS 1998: 35 Air bag fuse 15a B12 Belt sw Body control module (behind left side of dash) Buick C11 Cluster fuse 10a Data line Data link connector (below left side of dash) Driver hi Driver lo Fuse block (behind right side of dash) G201 (behind right side of dash) G309 (left front door sill) Ground Hot in run, bulb test or start Ignition Indicator Inflatable restraint i/p module (upper right side of dash) Inflatable restraint sensing and diagnostic module (under right front seat) Inflatable restraint steering wheel module (center of steering wheel) Inflatable restraint steering wheel module coil Instrument cluster Nca Nca b Olds Pass hi Pass lo Pnk S226 (dash harn, right side of dash) S330 (driver's seat harn, below driver's seat) Seat belt switch Shorting bar Sir ind Tan
TRANSMISSION
3.8L 3.8L (VIN 1), Transmission Wiring Diagram, 4T65-E for Buick Regal GS 1998 List of elements for 3.8L (VIN 1), Transmission Wiring Diagram, 4T65-E for Buick Regal GS 1998: 72 1-2 shift sol 2-3 shift sol 5v reference a A/t iss sensor hi A/t iss sensor lo Automatic transaxle (4t65-e) Automatic transaxle fluid pressure manual valve position switch Automatic transaxle fluid temperature sensor Automatic transaxle input shaft speed sensor B12 Battery in Body control module & instrument cluster Class ii data Cluster fuse 10a Data link connector (partial) (below dash, right of steering column) Ecm fuse 10a Ect sensor in Ect sensor return Eng emis fuse 10a Engine controls system Engine coolant temperature sensor (below throttle body) Fuse block G129 (left side of engine on transaxle stud) G129 (lower left side of engine on transaxle stud) Hot at all times Hot in run, bulb test or start Ign 0 fuse 10a Ignition 1 in Ignition wake up in Instrument cluster Malfunction indicator lamp Mil ctrl Pc sol hi Pc sol lo Pcm ground Pcm-bcm fuse 10a Pnk Powertrain control module (forward right front strut tower) Pressure control sol Red Rev S105 S106 S107 (eng harn, approx 2 cm from icm c2 conn breakout) S122 (eng harn, approx 15 cm from pcm breakout) S270 Splice pack sp205 (below dash, right of steering column) Stop lamp switch Tcc pwm sol Tcc release Tcc release in Tcc/ brake switch Tcc/brake sw in Tft sensor in Tft sensor return Throttle position sensor To: body control module, ign main relay & crank relay Tp sensor in Tp sensor return Tr sw in-a Tr sw in-b Tr sw in-c Tr sw in-p Trans fuse 10a Trans range a in Trans range b in Trans range c in Transaxle range switch (top of transaxle) Underhood electrical center Vehicle speed sensor (lower right rear of engine compt, end of transaxle) Vss hi in Vss lo in 3.8L (VIN K), Transmission Wiring Diagram, 4T65-E for Buick Regal GS 1998 List of elements for 3.8L (VIN K), Transmission Wiring Diagram, 4T65-E for Buick Regal GS 1998: 72 1-2 shift sol 2-3 shift sol 5v reference a A/t iss sensor hi A/t iss sensor lo Automatic transaxle (4t65-e) Automatic transaxle fluid pressure manual valve position switch Automatic transaxle fluid temperature sensor Automatic transaxle input shaft speed sensor B12 Battery in Body control module & instrument cluster Class ii data Cluster fuse 10a Data link connector (partial) (below dash, right of steering column) Ecm fuse 10a Ect sensor in Ect sensor return Eng emis fuse 10a Engine controls system Engine coolant temperature sensor (below throttle body) Fuse block G129 (left side of engine on transaxle stud) G129 (lower left side of engine on transaxle stud) Hot at all times Hot in run, bulb test or start Ign 0 fuse 10a Ignition 1 in Ignition wake up in Instrument cluster Malfunction indicator lamp Mil ctrl Pc sol hi Pc sol lo Pcm ground Pcm-bcm fuse 10a Pnk Powertrain control module (forward right front strut tower) Pressure control sol Red Rev S105 S106 S107 (eng harn, approx 2 cm from icm c2 conn breakout) S122 (eng harn, approx 15 cm from pcm breakout) S270 Splice pack sp205 (below dash, right of steering column) Stop lamp switch Tcc pwm sol Tcc release Tcc release in Tcc/ brake switch Tcc/brake sw in Tft sensor in Tft sensor return Throttle position sensor To: body control module, ign main relay & crank relay Tp sensor in Tp sensor return Tr sw in-a Tr sw in-b Tr sw in-c Tr sw in-p Trans fuse 10a Trans range a in Trans range b in Trans range c in Transaxle range switch (top of transaxle) Underhood electrical center Vehicle speed sensor (lower right rear of engine compt, end of transaxle) Vss hi in Vss lo in
TRUNK, TAILGATE, FUEL DOOR Trunk Release Wiring Diagram for Buick Regal GS 1998 List of elements for Trunk Release Wiring Diagram for Buick Regal GS 1998: 12 C1 c C2 b9 F9 c1 G313 (right side of rear shelf) Hot at all times R/cmpt rel fuse 7.5a Rear compart- ment lid lock release actuator (mounted to rear compt lid) Rear compartment lid release relay (behind right side of dash, mounted on underside of cross beam) Remote control door lock receiver (rcdlr) (left side of dash, on right side of instrument cluster) S430 Transaxle range switch (left of engine, on transaxle) Underhood accessory wiring junction block (mounted to right strut tower)
WARNING SYSTEMS Warning System Wiring Diagrams for Buick Regal GS 1998 List of elements for Warning System Wiring Diagrams for Buick Regal GS 1998: 71 (below left side of dash) electronic brake traction control module (ebtcm) (body harn, on floor, under passenger's seat) s322 (left side of engine, in air cleaner) powertrain control module (pcm) (low tire) serial data class (seat belt) serial data class (w/ heated seats) (w/o heated seats) s303 Accessory Ajar B10 B12 Bcm fuse 10a Body control module (bcm) (behind left side of dash, left of steering column) C11 C12 C13 C16 Cluster fuse 10a Computer data lines system Crank Crank signal fuse 10a Ctsy D16 Daytime running lamp control module (behind left side of dash) Door ajar Fuse block G202 (below dash, right side of steering column) G309 (left front door sill) Ground Head Headlamp switch Hot at all times Hot in accy Hot in off, bulb test, run or start Hot in run, bulb test or start Hot in start Ign 0 fuse 10a Igni- tion Ignition 0 Ignition 1 Ignition switch (key in ignition switch) Instrument cluster Interior lights system Key in ign Left front door lock (ajar indicator switch) Lp park fuse 20a Nca Off Or run P/b input P/b switch signal alarm Park Park brake (ign 1) Park brake indi- cator switch Park lp off Pcm-bcm fuse 10a Pnk S211 S234 S270 S330 S504 Seat belt switch Seat belt switch (ign 1) Serial data class Serial data class 2 Splice pack sp205 (below dash, right side of steering column) Tan Tire infla- tion reset switch Tire inflation reset switch (in fuse block) Under- hood acces- sory wiring junction block
WIPER/WASHER Wiper/Washer Wiring Diagram for Buick Regal GS 1998 List of elements for Wiper/Washer Wiring Diagram for Buick Regal GS 1998: 17 Fuse block (behind right side of dash) G102 (base of left strut tower) G201 (behind right side of dash) Hot in acc or run Mist Off Pulse Red S230 S249 S284 Washer switch Windshield washer pump Windshield wiper motor Windshield wiper/washer switch Wiper fuse 25a Wiper switch
