Columbus 383FB sometimes when the wiring harness coming from the trailer plugged into the truck for light and brakes it says on my driver information center check trailer wiring anyone had that happen or know what it might be
I had an inside-the-bed trailer cable plug installed. A connection in the bumper plug harness was separated and the new harness inserted. That bundle was cable-tied and taped. I got your message and determined my connection bundle was tied too tightly which opened a connection. I removed some of the binding tension and the message quit appearing.
cleaned all connections with electrical cleaner and used dialectical grease it is not the truck, hooked up to three other trailers and it worked fine no message other than trailer connected, hooked up to my 5th wheel it says trailer connected/ check trailer wiring back and forth has to be the 5th wheel not sure where on the trailer.
Here is a suggestion. shut off the truck, close the doors and wait until all the truck lights kept on by auto delays shut off before connecting the trailer plug. Some of the computers in these truck are sensitive and register error when there really isn't one.
We have the same problem. The female plug that comes with the RV has its contact points just a little to far inside of itself. I tied a string to it and the truck and most of the time rectified the issue.