Passenger side rear taillight does not work?

DOLLABILL25

MEMBER
2000 AUDI A4
AUTOMATIC
150,000 MILES

Okay, so my passenger rear taillight doesn't work brake light works. I get voltage to all my wires except for one wire. So, I was just curious what the wiring diagram/pin out is for my taillights, brake lights, blinkers, reverse lights, etc etc. Thank you

6 Replies

JACOBANDNICKOLAS

MECHANIC
109,709 POSTS

Hi,

There is a rear lamp control module that may be faulty. What color is the wire that has no power? If it is brown, that is likely the ground, so no power would be there. Also, are you certain the bulb is good?

I attached a pic below of the optional schematics based on options. Take a look and let me know which you have and I'll get you the schematics.

Take care,

Joe

See pic below.

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Tuesday, December 12th, 2023 AT 7:20 PM

DOLLABILL25

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44 POSTS

The 2nd, 3rd, and 4th one please. Thank you

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Wednesday, December 13th, 2023 AT 1:06 AM

DOLLABILL25

MEMBER
44 POSTS

Yes, brand new bulbs and it's not the ground wire it's a red with black stripe I believe.

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Wednesday, December 13th, 2023 AT 1:07 AM

JACOBANDNICKOLAS

MECHANIC
109,709 POSTS

Hi,

There is a red/black in the schematics. I followed it and it ran to the rear light control module.

There are three sets of schematics below. I had to cut them in half to make each one readable. The first two are number 2, the next two are number 3, and the last two are number 4 from the list you requested. I wrote numbers 2 and 3 in two of the pics which are numbers 3 and 4 from the ones requested.

Let me know if this helps.

Take care,

Joe

See pics below.

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