So my 02 Sport has a flat 4 pin already installed. I need to install a 7 pin round so that I can tow my smallish Coleman Popup. Searches I've done are usually about 4 pin to 7 pin adapters. Can't seem to find a decent 7 pin installation thread.

The harness I'm thinking of installing has the 7 Pin, and a flat 4 pin on the side. Rather than just go to U-Haul and pay them to do it, I'm wondering if there is a simple way to do this myself. On a Suburban I once had, I just unplugged a connector a couple feet back underneath, then plugged in the new harness and all was fine. Wondering if such a thing exists for my 02 Sport.

Thanks for any help