Review on 🚗 25ft Male & 4ft Female 4 Pin Flat Trailer Wiring Harness Kit [Wishbone-Style] [SAE J1128 Rated] [18 AWG Color Coded Wires] - 4 Way Flat 5 Wire Harness For Utility and Boat Trailer Lights Kits by Ricky Pee

This harness worked. I only needed the trailer side, but I needed the car side so I could hook it up to the battery for troubleshooting. In any case, it was easy to install and the overall length was long enough for my small trailer, but the white ground wire on the side of the trailer was short. Didn't do a full spin test, but I'll add a piece to lengthen it because it looks like it might pull out. My connector is built into the truck's bumper, so the end of the cable doesn't protrude beyond the car. There is also no outer protective cover on the trailer side (like the strap I removed). It's not a deal breaker, but if I had known about it beforehand I might have gone for a different option. Truck - F150 2019, Trailer - Harbor Freight 4 x 8 Foldable Trailer, Capacity 1195#.