Quick question for you guys. Hopefully, someone can help. I have the factory tow package on the 3.7 Grand Cherokee. It has the 4 pin wiring harness. I just recently bought a boat that has a 5 pin wiring harness. The extra pin is for the reverse lights so that the hydraulic brakes on the boat trailer do not engage when backing up. My questions is, is there an easy way to convert to a 7 pin harness using all the existing wiring or do I need to run a whole new wiring harness from the front?
look under your jeep, you may find an extra plug in under your rear bumper. all you may need to do is plug this into the back of a 7 pin mopar connector. mine came with both and its a 3.7l also.
Thanks. There is a plug under there so i guess i am off to the dealership to get the plug. You wouldn't happen to know the part number or what it is called?