Problems with headlights on 2002 WS6

:screwy: I installed a set of led underbody lights on my wifes TA for her for Christmas.The next day when you turn on the headlights they work fine but when you turn them off they go down then pop back up and make a grinding sound from the passenger side one.I tied in to the BAT terminal on the deiver side by the fender and the ground that the factory used on the driver side fender.Any chance its from the lights and if so how can I fix it?Thanks in advance,Buddy.