EXTERIOR LIGHTS – Buick Lucerne CXS 2007 – SYSTEM WIRING DIAGRAMS

EXTERIOR LIGHTS

Exterior Lamps Wiring Diagram (1 of 2) for Buick Lucerne CXS 2007

List of elements for Exterior Lamps Wiring Diagram (1 of 2) for Buick Lucerne CXS 2007:

• 3.8l
• 4.6l
• Auto
• Backup lamp circuit
• Batt pos volt
• Body control module (bcm) (right of glove box)
• Center high mounted stop lamp (chmsl)
• Chmsl sply volt
• Driver outside rear view mirror (in driver's door)
• Engine control module (pcm) (left side of engine compt)
• Front passenger outside rear view mirror (in front passenger's door)
• G300 (under driver's seat)
• G301 (under left rear seat)
• G304 (under right front passenger's seat)
• G403 (right front wall of luggage compt)
• Hazard sw sig
• Hazard switch
• Head
• Headlamp switch
• Hot at all times
• If equipped
• Interior lights system
• Left auxi- liary tail lamp
• Left auxiliary tail lamp assembly
• Left corn lmp rly ctrl
• Left turn
• Left turn sw sig
• Lf turn
• Lf turn sig lmp sply
• Logic
• Lr stop/turn lmp sply
• Lt crn lamp fuse f19 10a
• Off
• Park
• Powertrain control module (pcm) (left front of engine compt, inside air cleaner housing)
• Prk lmp rly ctrl
• Prk lmp sw on sig
• Rf turn
• Rf turn sig lmp sply
• Right auxi- liary tail lamp
• Right auxiliary tail lamp assembly
• Right backup lamp
• Right corn lmp rly ctrl
• Right turn
• Right turn sw sig
• Rr stop/turn lmp sply
• Rt crn lamp fuse f20 10a
• S202
• S204
• S206
• Sig lmp c1 sply volt
• Stop lmp sw sig
• Tan
• Throttle actuator control (tac) module (on throttle body assembly)
• Transmission control module (tcm) (left rear of engine compt)
• Trn/sig pcb relay
• Turn/signal multifunction switch
• Underhood fuse block (on right front of engine compt, forward of strut tower)

Exterior Lamps Wiring Diagram (2 of 2) for Buick Lucerne CXS 2007

List of elements for Exterior Lamps Wiring Diagram (2 of 2) for Buick Lucerne CXS 2007:

• Chmsl/ bck-up fuse f18 10a
• G104 (right front corner of engine compt)
• G402 (left rear of luggage compt)
• G403 (right front wall of luggage compt)
• Hot at all times
• Left front cornering lamp
• Left front headlamp assembly
• Left front marker lamp
• Left front park/ turn signal lamp
• Left rear marker lamp
• Left stop/tail/turn signal lamp
• Left tail lamp assembly
• License lamp
• Lt prk lamp fuse f42 10a
• Lt trn/ sig fuse f15 15a
• Prk lamp relay r2
• Rear fuse block (below left side of rear seat)
• Right front cornering lamp
• Right front headlamp assembly
• Right front marker lamp
• Right front park/ turn signal lamp
• Right rear marker lamp
• Right stop/tail/turn signal lamp
• Right tail lamp assembly
• Rr trn/ sig fuse f16 15a
• Rt prk lamp fuse f43 10a
• S323 (in body harness, approximately 15 cm (6 in) from branch for rear fuse block)
• S324 (in body harness, approximately 5 cm (2 in) from breakout for right inflatable restraint roof rail module)
• S326
• S402
• S404 (in rear fascia harness, approximately 13 cm (5 in) from breakout for license lamps)
• Tan
• Trailer stop/turn
• Underhood fuse block (on right front of engine compt, forward of strut tower)

3.8L VIN 2

3.8L VIN 2, Back-up Lamps Wiring Diagram for Buick Lucerne CXS 2007

List of elements for 3.8L VIN 2, Back-up Lamps Wiring Diagram for Buick Lucerne CXS 2007:

• (in body harness, approximately 7 cm (3 in) from breakout for battery current sensor) s325
• (lower left rear of engine) g112
• Automatic transmission
• Backup
• Backup lmp sply
• Batt pos volt
• Body control module (bcm) (right of glove box)
• Bus +
• Bus -
• Chmsl/ bck-up fuse f18 10a
• Code a
• Code b
• Computer data lines system
• G403 (right front wall of luggage compt)
• Hot at all times
• Inside rear view mirror
• Left auxiliary tail lamp assembly
• Left backup lamp
• Lmp sply volt
• Logic
• Powertrain control module (left front of engine compt, inside air cleaner housing)
• Rear fuse block (below left side of rear seat)
• Right auxiliary tail lamp assembly
• Right backup lamp
• Sig a
• Sig b
• Tan
• Transmission internal mode switch

4.6L VIN Y

4.6L VIN Y, Back-up Lamps Wiring Diagram for Buick Lucerne CXS 2007

List of elements for 4.6L VIN Y, Back-up Lamps Wiring Diagram for Buick Lucerne CXS 2007:

• (in body harness, approximately 7 cm (3 in) from breakout for battery current sensor) s325
• (lower left rear of engine) g112
• Automatic transmission
• Backup
• Backup lmp sply
• Batt pos volt
• Body control module (bcm) (right of glove box)
• Bus +
• Bus -
• Chmsl/ bck-up fuse f18 10a
• Computer data lines system
• G403 (right front wall of luggage compt)
• Hot at all times
• Inside rear view mirror
• Left auxiliary tail lamp assembly
• Left backup lamp
• Lmp sply volt
• Logic
• Nca
• Rear fuse block (below left side of rear seat)
• Right auxiliary tail lamp assembly
• Right backup lamp
• S105
• Sig a
• Sig b
• Tan
• Transmission control module (left rear of engine compt)
• Transmission internal mode switch