EXTERIOR LIGHTS – Audi A4 2003 – SYSTEM WIRING DIAGRAMS

EXTERIOR LIGHTS

Backup Lamps Wiring Diagram, Avant (High Line) for Audi A4 2003

List of elements for Backup Lamps Wiring Diagram, Avant (High Line) for Audi A4 2003:

• 31a
• A/t
• Back-up
• Back-up light switch
• Comfort system central control module (near base of left front seat, in electronics box)
• Fuse 15a
• Fuse holder (left end of dash)
• G50 (left side of luggage compt)
• G78 (at base of right "b" pillar)
• Hot in run or start
• Left taillamp assembly
• M/t
• Multi- function transmission range (tr) switch
• Right taillamp assembly
• T23
• T32b
• Vehicle electrical system control module (behind left side of dash)

Backup Lamps Wiring Diagram, Avant (Low Line) for Audi A4 2003

List of elements for Backup Lamps Wiring Diagram, Avant (Low Line) for Audi A4 2003:

• 31a
• A/t
• Back-up
• Back-up light switch
• Fuse 15a
• Fuse holder (left end of dash)
• G50 (left side of luggage compt)
• G78 (at base of right "b" pillar)
• Hot in run or start
• Left taillamp assembly
• M/t
• Multi-function transmission range (tr) switch
• Right taillamp assembly

Backup Lamps Wiring Diagram, with Convertible for Audi A4 2003

List of elements for Backup Lamps Wiring Diagram, with Convertible for Audi A4 2003:

• 31a
• Back-up
• Comfort system central control module (near base of left front seat, in electronics box)
• Fuse 15a
• Fuse holder (left end of dash)
• Hot in run or start
• Left taillamp assembly
• Park/neutral position (pnp) relay (relay carrier e-box)
• Right taillamp assembly
• T23
• T32b
• Transmission control module (tcm) (in plenum chamber e-box, at left rear of eng compt)
• Vehicle electrical system control module (behind left side of dash)

Backup Lamps Wiring Diagram, without Convertible, Sedan for Audi A4 2003

List of elements for Backup Lamps Wiring Diagram, without Convertible, Sedan for Audi A4 2003:

• 31a
• A/t w/ cvt
• A/t w/o cvt
• Back-up
• Back-up light switch
• Comfort system central control module (near base of left front seat, in electronics box)
• Fuse 15a
• Fuse holder (left end of dash)
• G50 (left side of luggage compt)
• G78 (at base of right "b" pillar)
• Hot in run or start
• Left taillamp assembly
• M/t
• Multi- function transmission range (tr) switch
• Park/neutral position (pnp) relay (relay carrier e-box)
• Right taillamp assembly
• T23
• T32b
• Transmission control module (tcm) (in plenum chamber e-box, at left rear of eng compt)
• Vehicle electrical system control module (behind left side of dash)

Exterior Lamps Wiring Diagram, Avant (High Line) for Audi A4 2003

List of elements for Exterior Lamps Wiring Diagram, Avant (High Line) for Audi A4 2003:

• (behind right side of dash) g33
• 13a
• 14a
• Acc
• Acc run
• Brake light switch (above brake pedal, on bracket)
• Computer data lines system
• Emergency flasher switch
• Filament bulb
• Fuse 10a
• Fuse 150a
• Fuse holder (left end of dash)
• Fuse strip (main fuse)
• G12 (on left center of firewall, near coolant reservoir)
• G33 (behind right side of dash)
• G43 (lower right "a" pillar)
• G50 (left side of luggage compt)
• G52 (left rear trunk lid)
• G78 (at base of right "b" pillar)
• Headlights system
• High- mount brake light
• Hot at all times
• Ignition/ starter switch
• Left headlight assembly
• Left side turn signal light
• Left taillamp assembly
• License plate lights
• Light switch
• Nca
• Off
• Park
• Red
• Right headlight assembly
• Right side turn signal light
• Right taillamp assembly
• Run
• Start
• Steering column electronic systems control module (top of steering column)
• Stop
• T10b
• T16a
• T23
• T32b
• Tail
• Turn
• Turn signal switch
• Vehicle electrical system control module (behind left side of dash, below 9 pin relay carrier)
• W/ 1 filament bulb
• W/ 2
• W/ high intensity headlights

Exterior Lamps Wiring Diagram, Avant (Low Line) for Audi A4 2003

List of elements for Exterior Lamps Wiring Diagram, Avant (Low Line) for Audi A4 2003:

• (behind right side of dash) g33
• 13a
• 14a
• Acc
• Acc run
• Brake light switch (above brake pedal, on bracket)
• Computer data lines system
• Emergency flasher switch
• Fuse 10a
• Fuse 150a
• Fuse holder (left end of dash)
• Fuse strip (main fuse)
• G12 (on left center of firewall, near coolant reservoir)
• G33 (behind right side of dash)
• G43 (lower right "a" pillar)
• G50 (left side of luggage compt)
• G52 (left rear trunk lid)
• G78 (at base of right "b" pillar)
• Headlights system
• High- mount brake light
• Hot at all times
• Ignition/ starter switch
• Left headlight assembly
• Left side turn signal light
• Left taillamp assembly
• License plate lights
• Light switch
• Nca
• Off
• Park
• Red
• Right headlight assembly
• Right side turn signal light
• Right taillamp assembly
• Run
• Start
• Steering column electronic systems control module (top of steering column)
• Stop
• T10b
• T16a
• T23
• T32b
• Tail
• Turn
• Turn signal switch
• Vehicle electrical system control module (behind left side of dash, below 9 pin relay carrier)
• W/ high intensity headlights

Exterior Lamps Wiring Diagram, with Convertible for Audi A4 2003

List of elements for Exterior Lamps Wiring Diagram, with Convertible for Audi A4 2003:

• (behind left side of dash) g49
• 13a
• 14a
• Acc
• Acc run
• Brake light switch (above brake pedal, on bracket)
• Computer data lines system
• Emergency flasher switch
• Fuse 10a
• Fuse 150a
• Fuse holder (left end of dash)
• Fuse strip (main fuse)
• G12 (on left center of firewall, near coolant reservoir)
• G33 (behind right side of dash)
• G43 (behind right kick panel)
• G44 (behind left kick panel)
• G661 (on convertible top housing)
• G662 (left rear side of vehicle)
• G663 (right rear side of vehicle)
• High- mount brake light
• Hot at all times
• Ignition/ starter switch
• Left headlight assembly
• Left side turn signal light
• Left taillamp assembly
• License plate lights
• Light switch
• Nca
• Off
• Park
• Red
• Right headlight assembly
• Right side turn signal light
• Right taillamp assembly
• Run
• Start
• Steering column electronic systems control module (top of steering column)
• Stop
• T10b
• T16a
• T23
• T32b
• Tail
• Turn
• Turn signal switch
• Vehicle electrical system control module (behind left side of dash, below 9 pin relay carrier)

Exterior Lamps Wiring Diagram, without Convertible, Sedan for Audi A4 2003

List of elements for Exterior Lamps Wiring Diagram, without Convertible, Sedan for Audi A4 2003:

• (behind right side of dash) g33
• 13a
• 14a
• Acc
• Acc run
• Brake light switch (above brake pedal, on bracket)
• Computer data lines system
• Emergency flasher switch
• Fuse 10a
• Fuse 150a
• Fuse holder (left end of dash)
• Fuse strip (main fuse)
• G12 (on left center of firewall, near coolant reservoir)
• G33 (behind right side of dash)
• G43 (lower right "a" pillar)
• G50 (left side of luggage compt)
• G78 (at base of right "b" pillar)
• Headlight assembly
• Headlights system
• High- mount brake light
• Hot at all times
• Ignition/ starter switch
• Left headlight assembly
• Left side turn signal light
• Left taillamp assembly
• License plate lights
• Light switch
• Nca
• Off
• Park
• Red
• Right
• Right side turn signal light
• Right taillamp assembly
• Run
• Start
• Steering column electronic systems control module (top of steering column)
• Stop
• T10b
• T16a
• T23
• T32b
• Tail
• Turn
• Turn signal switch
• Vehicle electrical system control module (behind left side of dash, below 9 pin relay carrier)
• W/ high intensity headlights