No Running Lights On Trailer. All my lights on the the truck work fine. I plugged in the trailer and turned on my head lights, no running lights on the trailer.
The running light circuit is controlled electrically through a BCM (body control module) or a LCM (lighting control module). Now have fully functional brake and directional lights, but running lights on both sides are dead. I would check the running lights for one with a short.
I plugged in the trailer and turned on my head lights, no running lights on the trailer.
All other lights work on the truck.
Brake and signal lights work fine. I worked until dark and no running lights on the trailer. I would check the running lights for one with a short.