All Wiring Diagrams for Buick Regal Custom 1993

COOLING FAN

3.1L

3.1L (VIN T), Cooling Fan Wiring Diagram for Buick Regal Custom 1993

List of elements for 3.1L (VIN T), Cooling Fan Wiring Diagram for Buick Regal Custom 1993:

• (1991-92)
• (1993)
• (3.1l gen ii s) (3.1l)
• (3.1l gen ii s)
• (3.1l gen ii s) (3.1l)
• (3.1l)
• A17
• A31
• B1 a3
• B2 a9
• C10
• C16
• C21
• Engine control module (right front engine compt)
• Engine controls system
• Engine controls system (a/c pressure sensor)
• Engine coolant temperature sensor
• Fusible element l 60a
• Fusible element n 30a
• G110 (lower left front of engine, on transaxle stud)
• Hot at all times
• Hot in run
• Ign fuse 10a
• Ign fuse 15a
• Nca
• Primary coolant fan
• Primary cooling fan relay
• Red
• Right side electrical center (right side of engine compt)
• Secondary coolant fan
• Secondary cooling fan relay

3.8L

3.8L (VIN L), Cooling Fan Wiring Diagram for Buick Regal Custom 1993

List of elements for 3.8L (VIN L), Cooling Fan Wiring Diagram for Buick Regal Custom 1993:

• (1990 all & 1991 early)
• (1990) (1991-93)
• (1990-92) (1993)
• (1991 late & 1992-93)
• (on engine) g133
• 1991-93
• A13
• A19 (1990)
• C13
• D19 (1991-93)
• Engine control module (right front engine compt)
• Engine controls system
• Engine coolant temperature sensor (top of engine)
• Fan a/c pressure switch (on a/c line near acumulator
• Fan fuse 3a
• Fan relay 1
• Fan relay 2
• Fan relay 3
• Fusible element d element n 30a
• Fusible element e element m 30a
• G133 (on engine)
• Hot at all times
• Hot in run
• Ign fuse 10a 15a
• Nca
• Primary coolant fan
• Red
• Right side electrical center (right side of engine compt)
• Secondary coolant fan

DEFOGGERS

Defogger Wiring Diagram for Buick Regal Custom 1993

List of elements for Defogger Wiring Diagram for Buick Regal Custom 1993:

• ('91-'93 w/ c68)
• (1990 regal & cut supreme)
• (1990-92)
• (1993)
• (all others)
• (c67)
• (c67) (c68)
• (c68) (c67)
• 1990-91
• 1990-92
• 1992-93
• C1 c1
• C1 c3
• C3 c1
• Clust fuse 10a
• Component center (right side of i/p)
• Defogger switch
• Fuse block (right side of i/p)
• G102 (left strut tower)
• G110 (lower left front of eng)
• G205 (right side of steering column bracket)
• G300 (under left front seat)
• G301 (under right front seat)
• Heater & a/c control assembly
• Hot at all times
• Hot in run
• Hot in run, bulb test or start
• Illum
• Indic fuse 10a
• Interior lights system
• Nca
• On ind
• Rear defog circuit breaker 30a
• Rear defogger
• Rear defogger timer relay (in component center)
• Timer

HORN

Horn Wiring Diagram for Buick Regal Custom 1993

List of elements for Horn Wiring Diagram for Buick Regal Custom 1993:

• 15a
• Cancel cam assembly
• G108 (left radiator support)
• Horn (left side of engine compt)
• Horn fuse
• Horn relay c
• Horn switch
• Hot at all times
• Ls electrical center (left side of engine compt)
• Slip ring
• Spring loaded contact
• Turn signal switch

INTERIOR LIGHTS

Courtesy Lamps Wiring Diagram (1 of 2) for Buick Regal Custom 1993

List of elements for Courtesy Lamps Wiring Diagram (1 of 2) for Buick Regal Custom 1993:

• 4-door only
• Ctsy fuse 15a
• Dome
• Fuse block (right side of dash)
• G102 (left strut tower)
• Headlight switch
• Hot at all times
• I/p compartment light
• Illuminated entry control
• Keyless entry receiver (right side or rear shelf)
• Left front door courtesy/ warning light
• Left front door jamb switch
• Left i/p courtesy light
• Left rear door courtesy/ warning light
• Left rear door jamb switch
• Nca
• Off
• Parade
• Right front door courtesy/ warning light
• Right front door jamb switch
• Right i/p courtesy light
• Right rear door courtesy/ warning light
• Right rear door jamb switch
• Right vanity mirror light
• Tan
• To dome and reading lights (diagram 2 of 2)
• Trunk lid
• Trunk light
• Underhood light
• Warning system (ignition key warning switch)

Courtesy Lamps Wiring Diagram (2 of 2) for Buick Regal Custom 1993

List of elements for Courtesy Lamps Wiring Diagram (2 of 2) for Buick Regal Custom 1993:

• Dome and reading light
• Dome light
• From fuse block (ctsy fuse) (diagram 1 of 2)
• From headlight switch b (diagram 1 of 2)
• G202 (behind dash, right side of steering column)
• G908 (center front of roof)
• Header courtesy light
• Inside lighted mirror
• Left rear courtesy light
• Nca
• Right rear courtesy light
• W/ dome light
• W/ header and rear courtesy lights
• W/ inside lighted mirror and dome reading light
• W/ sunroof
• W/o sunroof

Instrument Illumination Wiring Diagram for Buick Regal Custom 1993

List of elements for Instrument Illumination Wiring Diagram for Buick Regal Custom 1993:

• (3-bulbs)
• (5- bulbs)
• (um6) (ux1) (uc1)
• 2-door
• 4-door w/ power door locks only
• 4-door w/ power windows
• Ashtray lamp
• Cancel cam assembly
• Cassette player cassette/equalizer compact disc player
• Cigar lighter
• Cluster switch assembly
• Console prndl light
• D12
• D13
• Dim
• Dim display signal
• Dim display signal in
• Dim display signal out
• Dome
• Fuse block (right side of dash)
• G102 (left strut tower)
• G202 (behind dash, right side of steering column)
• G300 (below left front seat)
• Gnd
• Headlight switch
• Hot at all times
• Hvac control assembly
• Instrument cluster
• Left front door lock switch
• Left master switch
• Nca
• Off
• Panel fuse 5a
• Parade
• Passenger temperature control
• Pulse width modulated
• Radio control head
• Radio receiver
• Right front door lock
• Right front door lock switch
• Right front window switch
• Right switch assembly
• Slip ring
• Steering wheel controls
• Turn signal switch
• Vf dim display
• Vf dimming signal in
• Vf dimming signal input
• Vf dimming signal out
• Vp dimming signal in

POWER ANTENNA

Power Antenna Wiring Diagram for Buick Regal Custom 1993

List of elements for Power Antenna Wiring Diagram for Buick Regal Custom 1993:

• 30a
• Antenna
• Antenna coax lead
• Antenna motor
• Antenna relay (in fender, behind right rear wheelhouse)
• C c
• Component center
• Down switch
• G300 (1993) (under left front seat)
• G301 (1988-92) (under right front seat)
• Hot at all times
• Nca
• Pnk
• Pwr acc circuit breaker
• Radio
• Radio on output
• Up switch

POWER DOOR LOCKS

Door Lock Wiring Diagram, with Keyless Entry for Buick Regal Custom 1993

List of elements for Door Lock Wiring Diagram, with Keyless Entry for Buick Regal Custom 1993:

• 15a
• 4 door only
• A/t
• Antenna
• Automatic door lock signal
• Battery
• Chime module
• Component center (behind right side of i/p)
• Ctsy fuse
• Fuse block (right side of i/p)
• G300 (below left front seat)
• G301 (under right front seat)
• Ground
• Hot at all times
• Hot in run
• Ignition
• Illuminated entry
• Interior lights system
• Keyless entry receiver (right side of rear shelf)
• Keyless programming connector (right side of trunk, above wheelhouse)
• Left front door lock motor
• Left front door lock switch
• Left rear door lock motor
• Lock
• Lock all doors
• M/t
• Nca
• Park input
• Pnk
• Power acc circuit breaker 30a
• Power door lock relay (right shroud, above center access hole)
• Power window circuit breaker 30a
• Program input
• Right front door lock motor
• Right front door lock switch
• Right rear door lock motor
• Rs electrical center
• Tan
• Transaxle range switch (left of engine, on transaxle)
• Transmitter in
• Trunk lid release
• Trunk lid release lockout switch (olds convertible only)
• Trunk lid release solenoid
• Trunk lid release switch
• Trunk rel fuse
• Unlk all doors
• Unlk driver's door
• Unlock

Power Door Lock Wiring Diagram, Automatic Door Locks for Buick Regal Custom 1993

List of elements for Power Door Lock Wiring Diagram, Automatic Door Locks for Buick Regal Custom 1993:

• (vin 4) (vin t) (vin x)
• A/t
• Automatic door lock signal
• Bat
• Chime module (in component center)
• Component center (right side of i/p)
• Ctsy fuse 14 15a
• D22 b28 b8
• Engine controls module
• Fuse block (right side of i/p)
• G129 (left front of engine on transaxle stud)
• G300 (under left front seat)
• Hot at all times
• Hot in run, bulb test or start
• Ign
• Indic fuse 10a
• Left door lock motor
• Left front door lock switch
• Left rear door lock motor (4 door)
• Lock
• Lock relay
• M/t
• Nca
• Park/ neutral input
• Park/ neutral position switch (left of engine on transaxle)
• Power door lock relay (right shroud, above center access hole)
• Powertrain control module (engine compartment right of strut tower)
• Pwr acc circuit breaker 30a
• R p
• Right door lock motor
• Right front door lock switch
• Right rear door lock motor (4 door)
• Stop fuse 15a
• Tan
• Unlock
• Unlock relay
• Vehicle speed input

POWER MIRRORS

Power Mirror Wiring Diagram for Buick Regal Custom 1993

List of elements for Power Mirror Wiring Diagram for Buick Regal Custom 1993:

• Ctsy fuse 15a
• Drive unit
• Fuse block
• G300 (below left front seat)
• Hot at all times
• J/c c200 (behind right side of i/p)
• Left outside mirror
• Left- right m
• Mirror position switch
• Mirror select switch
• Motor
• Nca
• Outside mirror control switch
• Right outside mirror
• Up- down m

POWER SEATS

6-Way Power Seat Wiring Diagram for Buick Regal Custom 1993

List of elements for 6-Way Power Seat Wiring Diagram for Buick Regal Custom 1993:

• (1990-92) (1993)
• (below left
• (below right
• 1993 buick w/ right power seat
• A h
• B g
• Back
• Breaker 30a
• Component center
• D tan
• Down
• Entire seat
• Front height
• Front height motor
• Front seat)
• Fwd
• Fwd/ back motor
• G300
• G301
• H b
• Hot at all times
• Left front seat
• Left seat switch
• Pwr/acc circuit
• Rear height
• Rear height motor
• Right front seat
• Right seat switch
• Tan
• Tan a

POWER WINDOWS

Power Window Wiring Diagram, Coupe for Buick Regal Custom 1993

List of elements for Power Window Wiring Diagram, Coupe for Buick Regal Custom 1993:

• (under left front seat) g300
• Component center
• Down
• Express down
• Express down module
• G or h
• Hot in run
• Illumination
• Interior lights system
• Left front
• Left front window motor
• Left master switch
• Pnk
• Pwr window circuit breaker 30a
• Right front
• Right front window motor
• Right front window switch
• Tan

Power Window Wiring Diagram, Sedan for Buick Regal Custom 1993

List of elements for Power Window Wiring Diagram, Sedan for Buick Regal Custom 1993:

• (under left front seat) g300
• A or b
• C or e
• Component center
• Down
• Express down
• Express down module
• Hot in run
• Illumination lamp
• Interior lights system
• Left front seat) g300
• Left front window
• Left front window motor
• Left master switch
• Left rear window
• Left rear window motor
• Left rear window switch
• Lock out switch
• Pnk
• Pwr window circuit breaker 30a
• Right front window
• Right front window motor
• Right front window switch
• Right rear window
• Right rear window motor
• Right rear window switch
• Tan

RADIO

Radio Wiring Diagrams, UM6, UX1 or U1C for Buick Regal Custom 1993

List of elements for Radio Wiring Diagrams, UM6, UX1 or U1C for Buick Regal Custom 1993:

• Acc b+ in
• Accb +
• Antenna
• Antenna input
• Assembly line diagnostic link (aldl) connector (right of steering column)
• Bat
• Bat power
• Bat pwr
• Bat pwr output
• Batt power input
• Battery pwr in
• Cancel cam assembly (inside top of steering column)
• Coaxial cable
• Compact disc player cassette/equalizer cassette player
• Data
• Data bus
• Data gnd out
• Data grd input
• Data in
• Data line
• Data out
• Elec fuse 2 15a
• Front speaker connectors (not used)
• Front speakers u66 speaker system
• Front speakers uw6 speaker system
• Fuse block (right side of i/p, in i/p compartment)
• G110 (left front of engine)
• G201 (behind i/p, near right side shroud)
• Ground
• Ground ground
• Ground in
• Hot at all times
• Hot in accy or run
• Ignition input
• Illum
• Illumination
• Interior lights system
• Left front speaker
• Left lower door speaker
• Left rear speaker
• Left upper door speaker
• Lft aud input+
• Lft audio+
• Light on signal
• Lights on feed
• Lights on input
• Lights on sig
• Lt front spkr
• Lt rear spkr
• Nca
• On output
• Panel light
• Pnk
• Power antenna
• Rad mute sig
• Rad power input
• Rad power out
• Radio
• Radio control head
• Radio control interface module
• Radio fuse 1 10a
• Receivers
• Rgt aud input+
• Rgt audio+
• Right front speaker
• Right lower door speaker
• Right rear speaker
• Right upper door speaker
• Rt front spkr
• Rt rear spkr
• Spring loaded
• Steering wheel control head switch and electronics module
• Tan
• Tape on sig
• Transmitters
• Turn signal switch
• Vcc +5
• Vf dim input
• Vf pwm ill
• Vf pwm ill input

Radio Wiring Diagrams, UM7 for Buick Regal Custom 1993

List of elements for Radio Wiring Diagrams, UM7 for Buick Regal Custom 1993:

• Antenna
• Assembly line diagnostic link (aldl) connector (right of steering column)
• Batt power input
• Battery input
• Battery power
• Data
• Data ground input
• Data ground output
• Data line
• Elec fuse 2 15a
• Front speaker connectors (not used)
• Front speakers u66 speaker system
• Front speakers uw6 speaker system
• Fuse block (right side of i/p)
• G110 (left front of engine)
• G201 (behind i/p, near right side shroud)
• Ground
• Hot at all times
• Hot in accy or run
• Illum input
• Interior lights system
• Left front speaker
• Left lower door speaker
• Left rear speaker
• Left upper door speaker
• Lft frt channel output
• Lft rear channel output
• Lights on feed
• Lights on input
• Nca
• On/off
• Panel light
• Pnk
• Power antenna
• Power antenna input
• Radio
• Radio control head
• Radio fuse 1 10a
• Radio power input
• Radio power output
• Rgt frt channel output
• Rgt rear channel output
• Right front speaker
• Right lower door speaker
• Right rear speaker
• Right upper door speaker
• Steering wheel radio control system (translator module)
• Tan
• Vf pwm illum input

STARTING/CHARGING

Charging Wiring Diagram for Buick Regal Custom 1993

List of elements for Charging Wiring Diagram for Buick Regal Custom 1993:

• 3.1l
• 3.8l
• Base cluster
• Battery
• Charge ind
• Check gauges ind
• D1o
• Fuse block (right side of dash)
• Fusible link (10 ga rust)
• Fusible link (12 ga rust)
• G108 (left radiator support)
• G110 (left front of engine)
• Gauges cluster
• Generator
• Hot in run
• Hot in run, bulb test or start
• Ign fuse 10a (1992)
• Ign fuse 15a
• Indic fuse 10a
• Inj fuse 10a (1993)
• Instrument cluster
• Power distribution system
• Red
• Right side electrical center (right side of engine compt)
• Starter assembly

Starting Wiring Diagram for Buick Regal Custom 1993

List of elements for Starting Wiring Diagram for Buick Regal Custom 1993:

• Acc
• Battery
• Bulb test
• G108 (left front radiator support)
• G110 (left front of engine)
• Hot at all times
• Ignition switch
• Lock
• Off
• Power distribution system
• Run
• Start
• Starter motor
• Starter solenoid
• Transaxle position switch (left of engine, on transaxle)

TRANSMISSION

3.1L

3.1L (VIN T), Transmission Wiring Diagram, 4T60-E for Buick Regal Custom 1993

List of elements for 3.1L (VIN T), Transmission Wiring Diagram, 4T60-E for Buick Regal Custom 1993:

• (grand prix only)
• (in center console)
• (lower left front
• (on bottom of i/p, right of steering column)
• (partial)
• 1st gear input
• 2nd gear request
• 2nd gear select sw
• 4th gear input
• 5v ref
• A11
• A12
• A15
• A17
• A18
• A21
• A22
• A23
• A30
• A31
• Automatic transaxle
• B14
• B16
• B19
• B23
• B29
• B30
• B31
• B32
• Battery
• Brake sw (behind i/p, on brake pedal support bracket)
• Brake sw in
• C11
• C17
• Data link conn
• Diagnostic input
• Ecm fuse 15a
• Ect sensor
• Electronic engine control module (ecm) (right side of engine compt, forward of strut tower)
• Engine coolant temp (ect) sensor (top left side of engine)
• Fuel/ ecm fuse 20a
• Fuse block: i/p
• G110
• G110 (lower left front of engine on transaxle stud)
• G205 (behind i/p, on right side of steering column support)
• Ground
• Headlight sw
• Hot at all times
• Hot in run
• Hot in run, bulb test or start
• Ign fuse 10a
• Ignition feed
• Illum
• Indic fuse 10a
• Of engine on transaxle stud)
• On ind
• Red
• Rs electrical center: u/h
• Sensor ground
• Serial data line
• Shift sol a
• Shift sol a ctrl
• Shift sol b
• Shift sol b ctrl
• Sw closed in 1st gear
• Sw closed in 4th gear
• Tan
• Tcc sol
• Tcc sol ctrl
• Throttle position (tp) sensor (top of engine, on throttle assembly)
• Tp sensor
• Transaxle pos sw (left of engine, on transaxle)
• Transxl pos sw in
• Vehicle speed sensor (vss) (right rear of engine, on transaxle)
• Vss in
• Vss rtn

3.8L

3.8L (VIN L), Transmission Wiring Diagram, 4T60-E for Buick Regal Custom 1993

List of elements for 3.8L (VIN L), Transmission Wiring Diagram, 4T60-E for Buick Regal Custom 1993:

• top of transmission)
• (3.8l) (3.4l)
• (behind i/p, right side
• (bottom of i/p, right of steering column)
• (left rear of engine comp.,
• (right side of engine,
• 5v ref
• A18
• A19
• A21
• A22
• Automatic transaxle
• Automatic transaxle range sw
• B11
• B20
• B21
• B22
• Battery
• Brake input
• Brake sw (behind i/p, on brake pedal support)
• C13
• C14
• C17
• C19
• C21
• Cruise control system
• Cruise on input
• D10
• D12
• D13
• D14
• D18
• D21
• Data link connector (partial)
• Diag. request input
• Ecm
• Ecm svc fuse 10a
• Ect sensor
• Engine coolant temp (ect) sensor top left side of engine)
• Fuse 15a
• Fuse block: i/p
• G120 below electronic ignition control module)
• G205 of steering column support)
• Ground
• Hot at all times
• Hot in run, bulb test or start
• Ignition
• Indic fuse 10a
• Powertrain control module (right side of engine compt, forward of strut tower)
• Red
• Res/accel input
• Rs electrical center: u/h
• Serial data
• Shift sol a
• Shift sol a ctrl
• Shift sol b
• Shift sol b ctrl
• Tan
• Tcc
• Tcc (pwm) sol
• Tcc (pwm) sol ctrl
• Tcc ctrl
• Tcc fuse 15a
• Throttle position (tp) sensor (top of engine, on throttle assembly)
• Tps input
• Trans pos sw a
• Trans pos sw b
• Trans pos sw c
• Trans pos sw parity in
• Vehicle speed sensor (vss) (right rear of engine, on transaxle)
• Vss in
• Vss rtn

TRUNK, TAILGATE, FUEL DOOR

Trunk Release Wiring Diagram for Buick Regal Custom 1993

List of elements for Trunk Release Wiring Diagram for Buick Regal Custom 1993:

• 1995 vftc c
• Door locks system (keyless entry)
• Hot at all times (grand prix, lumina, regal)
• Hot in run (cutlass supreme)
• Luggage compartment release lockout switch (cutlass supreme convertible)
• Release solenoid
• Release switch
• Rs electrical center (in engine compartment, front of right strut tower)
• Transaxle position switch
• Trunk rel fuse 15a
• W/ automatic transaxle
• W/ manual transaxle

WIPER/WASHER

2-Speed Wiper/Washer Wiring Diagram for Buick Regal Custom 1993

List of elements for 2-Speed Wiper/Washer Wiring Diagram for Buick Regal Custom 1993:

• (1990-92)
• (1993)
• (left front of engine) g110
• (left strut tower) g102
• E10
• E11
• Fuse block
• Hot in accy or run
• Mechanical arm
• Mist
• Off
• Park switch
• Pnk
• Red
• Washer motor
• Washer switch
• Wiper fuse 25a
• Wiper motor assembly
• Wiper switch
• Wiper switch assembly

Interval Wiper/Washer Wiring Diagram for Buick Regal Custom 1993

List of elements for Interval Wiper/Washer Wiring Diagram for Buick Regal Custom 1993:

• (1990-92)
• (1993) g102
• (left strut tower)
• E10
• E11
• Fuse block
• G110 (left front of engine)
• Hot in accy or run
• Mechanical arm
• Mist
• Off
• Park switch
• Pnk
• Pulse
• Pulse delay
• Red
• Timer
• Washer motor
• Washer switch
• Wiper fuse 25a
• Wiper motor assembly
• Wiper switch
• Wiper/ switch assembly