Adding a 7-Way Trailer Connector to a 2010 Ford F-150 with To convert the factory 4-Way flat trailer connector on the back of your 2010 Ford F-150, you will need Adapter 4 Pole to 7 Pole and 4 Pole, # 37185 will plug the factory 4-Way into the back of the adapter and hardwire the remaining 4 wires. 2010 Ford F-150 Wiring Diagram Manual Original 2010 Ford F-150 Wiring Diagram Manual Original. click on thumbnail to zoom. Condition Qty Price ; Very Good this wiring diagram shows you how to follow the wiring from bumper-to-bumper. It will help you understand connector configurations, and locate and identify circuits, relays, 2010 Ford F-150 Trailer Wiring | etrailer Lowest Price Trailer Wiring Guarantee. Installation instructions and lifetime expert support on all purchases of 2010 Ford F-150 Trailer Wiring. Order online at etrailer or call 800-298-8924. 2010 Ford F150 Trailer Wiring Harness Diagram | Trailer 2010 Ford F150 Trailer Wiring Harness Diagram – 2010 ford f150 trailer wiring harness diagram, People comprehend that trailer is a vehicle comprised of quite complicated mechanisms. This automobile is designed not only to travel one place to another but also to take heavy loads. 2010 Ford F150 Trailer Wire Harness and Connector Equip cars, trucks & SUVs with 2010 Ford F150 Trailer Wire Harness and Connector from AutoZone. Get Yours Today! We have the best products at the right price.