A4 B7 3.0 TDI Retrofit Tow Hitch - Problems
I’ve recently installed a tow hitch to my A4 B7 3.0 TDI (2007MY). I’ve followed the instructions however when wiring the changes to the 32 pin grey plug the car’s indicators stop working inside and out, but hazard lights work but no clicking sound can be heard in the car.
The remote key also fails to lock/unlock the car but it can be started and driven.
Reverting the wires in the 32 pin grey plug restores the problem, however the how electric do not work.
Has anyone successfully retrofitted a tow hitch to an A4 B7?
Any tips would be gratefully received.