OEM Trailer Wiring on B5 A4

[cray54]

Who manufactured the factory trailer hitch wiring kit?

Does anyone happen to know a specific part number?

Thanks,
Chris

[Vreihenmotor6]

I just used an aftermarket one, I preffer the isolation style ones that have a separate power supply to them

run a power wire back, make all the connections at the driver side tailight except one from the passenger side and you're done

[cray54]

I have a harness already hooked up. I just wanted to find out who manufactured the OEM harness so I could get some schematic information from the manufacturer.

-Chris