I am new to the site, and would appreciate any help anyone can give. I have a 2003 1500 and am having a problem with the trailer harness on the truck. The left side works but not the right. I checked the fuses at least the ones I could see. I also put a new harness in and that did not work. I am stuck and do not know what else to do. The lights all work fine on the truck, turning signals, brake lights. It is when I hook up to the truck that the problem occurs. Thanks for taking the time to read.