Seven Pin Wiring Diagram F150 Truck I checked my 7-pin plug (factory installed towing package on a 2005 F150) and the "backup" wire is black-pink stripe, NOT red. It goes to the CENTER contact in the plug. I confirmed it with a voltmeter. There is a "fat" white wire that goes to the contact at about 7:00 o'clock which is negative (or ground) and would be the other wire you would use.
Seven Pin Wiring Diagram F150 Truck Visit the post for more. 7 pin trailer connector wiring diagrams beautiful 2016 ford f 150 comfortable 13 pin socket wiring diagram contemporary electrical ford f250 trailer ideas of f150 harness wiring 7 pin trailer plug for 1998 c1500 pickup tr e701ee2 jpg 7 pin wiring diagram 1
Seven Pin Wiring Diagram F150 Truck SOURCE: Installing a 7-pin trailer towing recptical on a 1991 Ford F150. I believe you can look up the manufacturer of the trailer plug kit and find the wiring diagram there. On alot of the trailer plug kits, they have pics and diagrams in the package.
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