I had this same set up on my Nitro. The Nitro could tow 5,000 pounds, so the factory harness terminated with a 7 Pin Connector. But, the DJ is different. The Factory Harness which plugs into the factory plug between the spare and bumper terminates in a flat 4 Pin Connector. More than likely this is because the DJ's maximum tow capacity is only 2,500 pounds (with the right conditions - see owners manual), so Dodge did not see the need for a Seven Pin Connector.