Mopar has it's own stupid ****... I have an '03 Ram Cummins. I lost the right brake light and turn signal on my trailer and camper. Went to look for a fuse or relay. Found out that the trailer circuit does not have replaceable components. They are part of the IPM Integrated Power Module which costs $500!
Ended up tieing into the main lighting system. I figured if it blew a fuse or relay at least I could replace it!
