Stop and Turn Signal Circuit Wires for 2025 Audi Q5 Trailer Wiring
Updated 09/26/2025 | Published 05/02/2025
Question:
I have a 2025 Audi Q5. I am have a difficult time identifying the color of wire that goes to the rt/lf signal and brake lights. Dealer is no help. Anyone know?
asked by: Bill
1
Helpful Expert Reply:
Hey Bill, when we installed trailer wiring on a 2020 Audi Q5 the driver side stop and turn signal was blue with a thin black stripe and the passenger side was black with a thin blue stripe. I can't guarantee that will be the same as what is on your 2025 Q5 but that is where you should start if you can with a circuit tester like the # PTW2993. Have you found the other circuits?
expert reply by:
Jameson C
1
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Jameson C.
9/26/2025
Hey Bill, did you have a chance to test the circuits on your 2025 Q5 with a circuit tester? I'm curious to know if the wire colors matched or if you found a different solution, as it could help others facing the same challenge.