[kna4977]

I have an 18 foot car hauler that I use frequently to haul a car to car shows etc. This past weekend I hauled one about 30 miles and when I pulled off the exit, a message came on the DIC to check trailer wiring, then it would flash in and out between that and the trailer connected message. I never hit any big bumps or anything. Just seemed to happen sporadically. When it said check trailer wiring I had no trailer brakes, and when it said trailer connected I did. The lights on the trailer work all the time regardless of these messages. At this point it no longer flashes back and forth between these messages nor does it ever say trailer connected. No brakes either. The trailer wiring looks fine, but I'm not sure whether to look into the integrated brake controller or the trailer itself. My hunch says it is something with the wiring on the truck, maybe a poor ground somewhere, but I'm not sure. Any suggestions would be great. If it's the truck I will just take it to the dealer, but if it's the trailer as simple as it is, I'm not too familiar with electric brake setups and don't really know how to test. Any thoughts???