ENGINE PERFORMANCE – GMC Cab & Chassis K2500 1999 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

5.7L

5.7L VIN R, Engine Performance Wiring Diagrams (1 of 4) for GMC Cab & Chassis K2500 1999

List of elements for 5.7L VIN R, Engine Performance Wiring Diagrams (1 of 4) for GMC Cab & Chassis K2500 1999:

• (attached to right rear of throttle body) idle air control (iac) valve
• (behind right side of dash)
• (bottom front of engine near, crank pulley) crankshaft position sensor
• (top right side of engine) evaporative emission canister purge valve
• 1-2 shift sol ctrl
• 2-3 shift sol ctrl
• 3-2 shift sol ctrl
• A/t w/ 4wd
• Air pump rel ctrl
• Cam posit sens sig
• Camshaft position sensor (inside distributor)
• Crank posit sens sig
• Ect sens sig
• Egr posit sig
• Fuel gauge lvl
• Fuel tank press sens
• G119 (right front of engine block)
• Heated oxygen sensor (5.ol: bank 1 sensor 3, 5.7l w/ below 8600 gvw: bank 1 sensor 2, 5.7l w/ over 8600 gvw: bank 2 sensor 2) (in exhaust pipe in back of right catalytic converter)
• Heated oxygen sensor (bank 1 sensor 1) (in exhaust pipe in front of left catalytic converter)
• Heated oxygen sensor (bank 2 sensor 1) (in exhaust pipe in front of right catalytic converter)
• Ho2s low
• Ho2s sig
• Iat sens sig
• Idle air ctrl (iac) a hi
• Idle air ctrl (iac) b lo
• Ign feed
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Knock sens sig
• Knock sensor (ks) (right side of engine block, below exhaust manifold, forward of starter)
• Map sens input
• Mass air flow sens sig
• Nca
• Others
• Pnk
• Pnk c ignition feed
• Pnk pnk
• S148
• S149
• S162
• Sens rtn
• Sens sig
• Sensor return
• Tan
• Tcc pwm sol ctrl
• Tcc sol ctrl
• Temp sens input
• Throttle posit sens
• Vehicle control module (vcm) (left side of engine compt)
• Vehicle speed sensor (left side of transmission, left side of transfer case w/ 4wd)
• Vehicle speed sensor buffer
• Vent ctlr
• Vss rtn
• Vss sig
• Vss signal

5.7L VIN R, Engine Performance Wiring Diagrams (2 of 4) for GMC Cab & Chassis K2500 1999

List of elements for 5.7L VIN R, Engine Performance Wiring Diagrams (2 of 4) for GMC Cab & Chassis K2500 1999:

• 2-3 red
• 3-2 red shift solenoid
• Air injection reaction (secondary) pump (on front of engine)
• Air injection reaction relay (underhood fuse/ relay center)
• Automatic transmission
• Aux-b fuse 30a stud-b
• Ecm1 fuse 20a
• Eng1 k7
• Evaporative emissions (evap) canister vent valve (left side of engine compt)
• Exhaust gas recirculation (egr) valve (front of engine near thermostat housing)
• Fluid pressure (tfp) manual valve position switch
• Fluid temperature sensor
• Fuel inj 1
• Fuel inj 2
• Fuel inj 3
• Fuel inj 4
• Fuel inj 5
• Fuel inj 6
• Fuel inj 7
• Fuel inj 8
• Fuse 20a l8
• G127 (left side of engine compt, on air injection reaction pump)
• Heated oxygen sensor (5.ol: bank 1 sensor 2, 5.7l w/ below 8600 gvw: bank 2 sensor 2, 5.7l w/ over 8600 gvw: bank 1 sensor 2) (in exhaust pipe in back of left catalytic converter)
• Hot at all times
• Hot in run & start
• Nca
• Pnk
• Pnk pnk pnk tan red
• Pressure control solenoid valve
• Red
• Red tcc solenoid
• S104
• S108
• S147
• S161
• S166 (eng harn, 18 cm from ebcm breakout)
• Shift solenoid
• Tan
• Torque convertor clutch pulse width modulation solenoid
• Under hood fuse-relay center
• W/4l80e 4-speed trans oly

5.7L VIN R, Engine Performance Wiring Diagrams (3 of 4) for GMC Cab & Chassis K2500 1999

List of elements for 5.7L VIN R, Engine Performance Wiring Diagrams (3 of 4) for GMC Cab & Chassis K2500 1999:

• (eng harn, approx 17 cm from breakout to egr valve) s106
• (eng harn, hd: 10 cm from egr valve breakout, ld: 27 cm from egr valve breakout)
• (engine harn, approx 16 cm from breakout to egr valve)
• (inside left frame rail, near rear crossmember)
• (inside left frame rail, near rear crossmember) g415
• (right rear of cylinder head) g117
• (taillamp extension harn, 6 cm from the fuel pump harn breakout)
• (taillamp extension harness, approx 10 cm from fuel pump balance module breakout)
• Automatic transmission input shaft speed sensor (left side of transmission)
• Balance fuel pump (on inside left frame rail, near front of rear tank)
• Convenience center (under left side of dash)
• D w/ dual fuel tanks
• Engine coolant temperature sensor (top right front of engine, near thermostat housing)
• F7 ign e fuse 10a g8
• Fuel gauge input
• Fuel pump & sender (in fuel tank)
• Fuel pump balance module (inside left side of frame rail)
• Fuel pump balance relay (on fuel pump balance module)
• Fuel tank pressure sensor (in fuel tank)
• Fuel tanks
• G415
• Gauges fuse 4 10a
• Ground
• Hot in off, run or start
• Hot in run or start
• I/p fuse block
• Ignition
• Instrument cluster
• Intake air temperature sensor (in air intake duct)
• M/t only
• Manifold absolute pressure (map) sensor (top right of engine, near fuel injectors)
• Mass air flow sensor (in air intake duct)
• Output to gauge c2
• Pnk
• Pnk a
• Pnk pnk tan red
• Primary tank fuel lvl sig
• Relay ctrl
• S103
• S213
• S231
• S232
• S315
• S318
• S319
• S324
• S430
• Secon tank fuel lvl sig
• Secondary fuel gauge sender (in fuel tank)
• Service engine soon indicator
• Speedometer input
• Tachometer input
• Tan a
• Throttle position sensor (on throttle body assembly)
• Trans fuse 20 10a
• Underhood fuse-relay center pnk
• Upshift lamp
• W/ dual fuel tank
• W/ dual w/o dual fuel tank
• W/o dual fuel tank
• W/o dual fuel tanks

5.7L VIN R, Engine Performance Wiring Diagrams (4 of 4) for GMC Cab & Chassis K2500 1999

List of elements for 5.7L VIN R, Engine Performance Wiring Diagrams (4 of 4) for GMC Cab & Chassis K2500 1999:

• (engine harness, approx 13 cm from s150
• (engine harness, approx 7 cm from ebcm breakout)
• (i/p harn, 20 cm from inflatable restraint switch breakout)
• (i/p harn, harness, 13 cm from left engine grommet)
• (i/p harness, approx 40 cm from instrument cluster breakout)
• (or
• (right rear of cylinder head) g120
• 4wd input
• 5v ref voltage
• A pnk
• A/c comp enable rel
• A/c request signal
• A/t
• Air conditioning system
• Air inlet vlv mtr ctlr
• Aux fan relay
• Brake sw input
• Brake switch input
• Check eng lp ctrl
• Clutch pedal position (cpp) switch (at top of clutch pedal)
• Cooling fans system
• Cpp sw input
• Cruise control module (left rear of engine compt, on firewall)
• Cruise ctrl sig eng
• Data link connector (under left side of dash, left side of steering column)
• Distributor
• Dual fuel mod return
• Ebcm breakout)
• Egr vlv feed
• Egr vlv ground
• Electronic brake control module (ebcm) (on left side of engine compt)
• Electronic variable orifice/ passlock control module (center of dash)
• Est output sig
• Evap can purge vlv
• F11 ecmb fuse 20a
• Force motor feed
• Force motor return
• Four whl dr sig
• Four whl dr sig lo
• Fuel level input
• Fuel pump a prime connector (left rear of eng compt)
• Fuel pump relay
• Fuel pump rly ctrl
• G117 (right rear of cylinder head)
• G12
• Ground
• High voltage coil wire
• Hot at all times
• Hot in run
• I/p fuse block
• Ign coil out
• Ign input
• Ign timing sig.
• Ignition
• Ignition coil (top left rear of engine)
• Ignition coil driver (left rear side of engine)
• Ignition feed
• M/t
• M4 brake fuse 18 10a n3
• Pnk
• Pressure switch input
• Radio
• Red
• S101
• S103
• S111 (engine harness, approx 10 cm from ebcm breakout)
• S151
• S152
• S153
• S221
• Sensor ground
• Sensor return
• Serial data sig
• Shift ind lp out
• Speed sensor
• Speed sensor input
• Stoplamp switch (top of brake pedal)
• Stoplamp/ clutch switch input
• Switch signal
• Trans input speed rtn
• Trans input speed sig
• Transfer case control module (under dash, on steering column support bracket)
• Transfer case switch (left top of transfer case)
• Transmissions system
• Underhood fuse- relay center
• Vcm sig
• Vehicle control module (vcm) (left side of engine compt)
• Vss input
• Vss sig out

6.5L

6.5L VIN F, Engine Performance Wiring Diagrams (1 of 4) for GMC Cab & Chassis K2500 1999

List of elements for 6.5L VIN F, Engine Performance Wiring Diagrams (1 of 4) for GMC Cab & Chassis K2500 1999:

• (bottom front of engine, near crank pulley) crankshaft position (ckp) sensor
• (engine harn, 31 cm from taillamp harn breakout)
• (engine harness)
• (i/p harn, approx 16 cm into i/p cluster breakout)
• (i/p harness)
• (top center of engine) boost pressure sensor
• (top of engine, near
• (top rear of right cylinder head) g117
• (top right front of engine, near thermostat housing) engine coolant temperature (ect) sensor
• 12v
• 3/2 shift sol
• 4wd signal
• 5 volt ref
• 5 vref
• 5v ref volt
• A/c request sig
• A/c system
• A/t fluid pressure (tfp) manual valve position switch
• A/t w/ 4wd
• A10
• A11 3 mode cruise a12
• Anti-lock brakes system
• App 1 sig
• App 2 sig
• App 3 sig
• Automatic transmission
• Automatic transmission input shaft speed (a/t iss) sensor (left side of transmission)
• B10
• B11
• B12
• Baro sensor input
• Brake sw in
• Brake switch input
• C10
• C11
• C12
• C13
• C14
• C15
• C16
• Cam posit sens sig rtn
• Camshaft posit sens
• Closure gnd
• Cruise control system
• Cruise ctrl sw engage
• Cruise eng sw retard
• D10
• D11
• D12
• D13
• D14
• D15
• D16
• Ect temp sens in
• Engine crank sens input
• Exhaust gas recirculation (egr) control/ barometric (baro) pressure sensor (upper left side of firewall, next to wiper motor)
• Force mtr hi
• Force mtr low
• Fuel pump input
• Fuel pump rly ctrl
• Fuel sol closure (5v sig)
• Fuel temp sens (5v sig)
• Glow plug "wait" lp out
• Glow plug relay
• Ground
• Intake air temperature (iat) sensor
• Intake man air temp sens
• Intake manifold
• Map sens input
• Mass air flow sig
• Nca
• Opening)
• Others
• Pnk
• Powertrain control module (pcm) (behind right side of dash, near blower motor)
• Pressure control solenoid valve
• Radio
• Range mode sel a
• Range mode sel b
• Range mode sel c
• Red
• S140
• S170
• S199
• S211
• S215
• S230
• Sensor gnd
• Shift red sol a
• Shift red sol b
• Tan
• Timing stepper mtr (high)
• Timing stepper mtr (low)
• Transmission speed input
• Transmission temp input
• Transmission temperature sensor
• Transmissions system
• Vehicle speed input
• Vehicle speed sensor (left side of transmission)
• Vehicle speed sensor adapter
• Vehicle speed sensor buffer (behind right side of dash)
• Vss hi
• Vss lo
• Vss output
• Vss rtn
• Vss sig

6.5L VIN F, Engine Performance Wiring Diagrams (2 of 4) for GMC Cab & Chassis K2500 1999

List of elements for 6.5L VIN F, Engine Performance Wiring Diagrams (2 of 4) for GMC Cab & Chassis K2500 1999:

• (a/t: eng harn, approx 4 cm from i/p harness breakout, m/t: i/p harn, 20 cm from inflatable restraint i/p module switch breakout)
• (engine harn)
• (on inj pump)
• 5 volt ref
• Accelerator pedal position (app) module (part of accelerator pedal)
• Clutch pedal position (cpp) switch (m/t only) (top of clutch pedal bracket)
• Cmp sig
• D2 trans fuse 20 20a e1
• D8 stop/haz fuse 1 20a c7
• Ecm-1 h7
• Electronic brake control module (on left side of engine compt)
• Engine shutoff solenoid (top of fuel injection pump)
• Fuel solenoid (rear of fuel injection pump)
• Fuel solenoid driver (left side of fuel injection pump)
• Fuse 20a
• High res sig
• Hot at all times
• Hot in run
• Hot in run or start
• I/p fuse block
• Injection timing stepper motor (top right front of engine)
• M4 brake fuse 18 10a n3
• Nca
• Optical fuel temperature sensor (on top of fuel injection pump)
• Pnk
• Pnk pnk
• Power distribution system
• Red
• S190
• S198
• S220 (i/p harness, approx 6 cm from steering column breakout)
• S222 (m/t) s152 (a/t)
• S299
• Sens grd
• Stop- lamp switch (on top of brake pedal)
• Tan d
• Underhood fuse-relay center

6.5L VIN F, Engine Performance Wiring Diagrams (3 of 4) for GMC Cab & Chassis K2500 1999

List of elements for 6.5L VIN F, Engine Performance Wiring Diagrams (3 of 4) for GMC Cab & Chassis K2500 1999:

• (inside left frame rail, below driver's door)
• (m/t: engine harness, approx 37 cm from breakout to ebcm, a/t: engine harness, approx 31 cm from taillamp harn breakout) s100
• (taillamp extension harness, approx 10 cm from fuel pump balance module breakout)
• (top rear of right cylinder head)
• (top rear of right cylinder head) g117
• Ecm-b fuse 20a
• F11
• Fuel lift pump
• Fuel pump prime connector (left side of eng compt)
• Fuel pump relay (in under fuse-relay center)
• Fuel pump/oil pressure switch (under intake manifold, center of engine)
• G117
• G117 (top rear of right cylinder head)
• G12
• Gauges fuse 4 10a
• Hot at all times
• Hot in run or start
• I/p fuse block
• Instrument cluster
• Instrument cluster system
• Instrument cluster system (fuel pump balance relay)
• Pnk
• Red
• S101
• S103
• S147
• S213
• S318
• Service engine soon indicator
• Service throttle soon indicator
• Tan
• Underhood fuse-relay center
• Vehicle speed input
• W/ dual tanks
• W/o dual tank
• Wait to start "glow plugs" indicator
• Water in fuel indicator
• Water in-fuel sensor (on fuel filter/ manager)

6.5L VIN F, Engine Performance Wiring Diagrams (4 of 4) for GMC Cab & Chassis K2500 1999

List of elements for 6.5L VIN F, Engine Performance Wiring Diagrams (4 of 4) for GMC Cab & Chassis K2500 1999:

• "serv eng soon" ind
• "serv throttle soon" ind
• (at air intake duct) mass air flow (maf) sensor
• (engine harness)
• (engine harness, approx 13 cm into ebcm breakout)
• (on fuel manager/filter) fuel heater
• (top rear of right cylinder head) g117
• 12v battery (fused)
• 12v battery fused
• 3/2 ctrl out
• A/c enable
• A/c system
• C10
• C11
• C12
• C13
• C14
• C15
• C16
• D10
• D11
• D12
• D13
• D14
• D15
• D16
• Data link connector (dlc) (under left side of dash, left of steering column)
• Egr sol output
• Egr valve sol putput
• Eng-i k7
• Engine shutoff sol out
• Exhaust gas recirculation (egr) vent solenoid (top center of engine)
• Exhaust gas recirculation egr solenoid (top left side of engine)
• Fuel sol module (5 vref)
• Fuel sol module feed
• Fuse 20a
• Fusible link
• Fusible links
• G117 (top rear of right cylinder head)
• Glow plug 1
• Glow plug 2
• Glow plug 3
• Glow plug 4
• Glow plug 5
• Glow plug 6
• Glow plug 7
• Glow plug 8
• Glow plug output
• Glow plug relay (top left rear of engine)
• Grd
• Ground
• Hot at all times
• Hot in run or start
• Ign
• Ignition
• Pcm gnd
• Pnk
• Powertrain control module (pcm) (behind right side of dash, near blower motor)
• Red
• Relay ctrl
• S103
• S108
• S137
• S138
• S147
• S150
• S191
• S269 (i/p harness)
• Serial data sig
• Shift sol a input
• Shift sol b input
• Signal
• Tan
• Tps 2 ref voltage
• Underhood fuse-relay center
• Wait to start ind
• Wastegate sol
• Wastegate solenoid (top left rear of engine)

7.4L

7.4L VIN J, Engine Performance Wiring Diagrams (1 of 4) for GMC Cab & Chassis K2500 1999

List of elements for 7.4L VIN J, Engine Performance Wiring Diagrams (1 of 4) for GMC Cab & Chassis K2500 1999:

• (attached to right rear of throttle body) idle air control (iac) valve
• (bottom front of engine near, crank pulley) crankshaft position sensor
• (eng harn) s145
• (top right side of engine) evaporative emission canister purge solenoid
• 1-2 shift sol ctrl
• 2-3 shift sol ctrl
• A/t w/ 4wd
• Air pump rel ctrl
• Cam posit sens sig
• Camshaft position sensor (inside distributor)
• Crank posit sens sig
• Ect sens sig
• Egr posit sig
• Fuel gauge lvl
• Fuel level input
• Fuel tank press sens
• G117 (back side of eng block, below right side of cylinder head)
• Heated oxygen sensor (bank 1 sensor 1) (in exhaust pipe in front of left catalytic converter)
• Heated oxygen sensor (bank 2 sensor 1) (in exhaust pipe in front of right catalytic converter)
• Heated oxygen sensor (bank 2 sensor 2) (in exhaust pipe in back of right catalytic converter)
• Ho2s low
• Ho2s sig
• Iat sens sig
• Idle air ctrl (iac) a hi
• Idle air ctrl (iac) b lo
• Ign feed
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Inj 7 ctrl
• Inj 8 ctrl
• Knock sens sig
• Knock sensor (ks) (right) (right side of engine block, below exhaust manifold)
• Knock sensor ks) (left) (left side of engine block, below exhaust manifold)
• Map sens input
• Mass air flow sens sig
• Nca
• Others
• Pnk
• Pnk c ignition feed
• Pnk pnk
• Pnk pnk pnk pnk
• S148
• S149
• S162
• Sens rtn
• Sens sig
• Sensor return
• Tan
• Tcc pwm sol ctrl
• Temp sens input
• Throttle posit sens
• Vehicle control module (vcm) (left side of engine compt)
• Vehicle speed sensor (left side of transmission, left side of transfer case w/ 4wd)
• Vehicle speed sensor adapter
• Vent ctlr
• Vss rtn
• Vss sig
• Vss signal

7.4L VIN J, Engine Performance Wiring Diagrams (2 of 4) for GMC Cab & Chassis K2500 1999

List of elements for 7.4L VIN J, Engine Performance Wiring Diagrams (2 of 4) for GMC Cab & Chassis K2500 1999:

• 2-3 red
• Air injection reaction (secondary) clutch (on front of air pump)
• Air injection reaction relay (underhood fuse/ relay center)
• Automatic transmission
• Ecm1 fuse 20a
• Eng1 k7
• Evaporative emissions (evap) purge solenoid vacuum switch (on top of engine)
• Exhaust gas recirculation (egr) valve (on top left side of eng)
• Fluid pressure (tfp) manual valve position switch
• Fluid temperature sensor
• Fuel inj 1
• Fuel inj 2
• Fuel inj 3
• Fuel inj 4
• Fuel inj 5
• Fuel inj 6
• Fuel inj 7
• Fuel inj 8
• Fuse 20a l8
• G119 (right front side of eng block)
• Heated oxygen sensor (bank 1 sensor 2) (in exhaust pipe in back of left catalytic converter)
• Hot in run & start
• Nca
• Pnk
• Pnk pnk pnk pnk
• Pnk pnk pnk tan red
• Pressure control solenoid valve
• Red
• S104
• S108
• S147
• S154
• S155
• Shift solenoid
• Tan
• Torque convertor clutch pulse width modulation solenoid
• Under hood fuse-relay center

7.4L VIN J, Engine Performance Wiring Diagrams (3 of 4) for GMC Cab & Chassis K2500 1999

List of elements for 7.4L VIN J, Engine Performance Wiring Diagrams (3 of 4) for GMC Cab & Chassis K2500 1999:

• (eng harn)
• (eng harn, approx 4 cm from egr valve breakout)
• (engine harn)
• (inside left frame rail, near rear crossmember)
• (inside left frame rail, near rear crossmember) g415
• (taillamp extension harn, 6 cm from fuel pump harn breakout)
• (taillamp extension harn, approx 10 cm from g415 breakout)
• (taillamp extension harness, approx 10 cm from fuel pump balance module breakout)
• Automatic transmission input shaft speed sensor (left side of transmission)
• Balance fuel pump (on inside left frame rail, near front of rear tank)
• Convenience center (under left side of dash)
• D w/ dual fuel tanks
• Engine coolant temperature sensor (top right front of engine, near thermostat housing)
• F7 ign e fuse 10a g8
• Fuel gauge input
• Fuel pump & sender (in fuel tank)
• Fuel pump balance module (inside left side of frame rail)
• Fuel pump balance relay (on fuel pump balance module)
• Fuel tank pressure sensor (in fuel tank)
• Fuel tanks
• G117 (back side of eng block, below right side of cylinder head)
• G415
• Gauges fuse 4 10a
• Ground
• Hot in off, run or start
• Hot in run or start
• I/p fuse block
• Ignition
• Instrument cluster
• Intake air temperature sensor (in air intake duct)
• Manifold absolute pressure (map) sensor (top right front of engine)
• Mass air flow sensor (in air intake duct)
• Output to gauge c2
• Pnk
• Pnk a
• Pnk pnk tan red
• Primary tank fuel lvl sig
• Relay ctrl
• S103
• S106
• S146
• S213
• S231
• S232
• S315
• S318
• S319
• S324
• S430
• Secon tank fuel lvl sig
• Secondary fuel gauge sender (in fuel tank)
• Service engine soon indicator
• Speedometer input
• Tachometer input
• Tan a
• Throttle position sensor (on throttle body assembly)
• Trans fuse 20 10a
• Underhood fuse-relay center
• W/ dual fuel tank
• W/ dual w/o dual fuel tank
• W/o dual fuel tank
• W/o dual fuel tanks

7.4L VIN J, Engine Performance Wiring Diagrams (4 of 4) for GMC Cab & Chassis K2500 1999

List of elements for 7.4L VIN J, Engine Performance Wiring Diagrams (4 of 4) for GMC Cab & Chassis K2500 1999:

• (back side of eng block, below right side of cylinder head)
• (engine harness, approx 13 cm from s150
• (engine harness, approx 7 cm from ebcm breakout)
• (i/p harn)
• (i/p harn, 20 cm from radio harn reakout)
• (i/p harness, approx 40 cm from instrument cluster breakout)
• (or
• 4wd input
• 5v ref voltage
• A/c comp enable rel
• A/c request signal
• A/t
• Air conditioning system
• Air inlet vlv mtr ctlr
• Aux fan relay
• Brake sw input
• Brake switch input
• Check eng lp ctrl
• Clutch pedal position (cpp) switch (at top of clutch pedal bracket)
• Cooling fans system
• Cpp sw input
• Cruise control module (left rear of engine compt, on firewall)
• Cruise ctrl sig eng
• Data link connector (under left side of dash, left side of steering column)
• Distributor
• Dual fuel mod return
• Ebcm breakout)
• Egr vlv feed
• Egr vlv ground
• Electronic brake control module (ebcm) (on left side of engine compt)
• Electronic variable orifice/ passlock control module (center of dash)
• Est output sig
• Evap can purge vlv
• F11 ecmb fuse 20a
• Force motor feed
• Force motor return
• Four whl dr sig
• Four whl dr sig lo
• Fuel level input
• Fuel pump a prime connector (left rear of eng compt)
• Fuel pump relay
• Fuel pump rly ctrl
• G117
• G12
• Ground
• High voltage coil wire
• Hot at all times
• Hot in run
• I/p fuse block
• Ign coil out
• Ign input
• Ign timing sig.
• Ignition
• Ignition coil (top left rear of engine)
• Ignition control module (on rear of intake manifold)
• Ignition feed
• M/t
• M4 brake fuse 18 10a n3
• Pnk
• Pnk a
• Pressure switch input
• Radio
• Red
• S101
• S103
• S111 (engine harness, approx 7 cm from ebcm breakout)
• S151
• S152
• S153
• S221
• Sensor ground
• Sensor return
• Serial data sig
• Speed sensor
• Speed sensor input
• Stoplamp switch (top of brake pedal)
• Stoplamp/ clutch switch input
• Switch signal
• Trans input speed rtn
• Trans input speed sig
• Transfer case control module (under dash, on steering column support bracket)
• Transfer case switch (left top of transfer case)
• Transmissions system
• Underhood fuse- relay center
• Vcm sig
• Vehicle control module (vcm) (left side of engine compt)
• Vss input
• Vss sig out