park lights on 1998 Audi A6 Quattro

my park and tail lights stop work when i pluged a trailer in to the car. i checked all fuses i could find and they where ok, where else do i look.

Asked by for the 1998 Audi A6 Quattro
you probably shorted the lamp control module. you are going to need someone with AUDI experience to fix this one.
ok that you