SOLVED: I need an F150 trailer towing wiring diagram. - Fixya Jun 02, 2010I need an F150 trailer towing wiring diagram. - Ford 2001 F150 Styleside SuperCrew question. Search Fixya. Browse Categories Answer Questions On alot of the trailer plug kits, they have pics and diagrams in the package. The 7 pin plug (truck side) is available with the pig tail set up that plugs directly into the wiring harness for the no auxiliary power to 7 way trailer - Ford F150 Forum Apr 12, 2008Ford F150 Forum. The site for Ford truck owners, by Ford truck owners power to the auxiliary prong on the 7 way connecter. the corresponding prong on the truck connecter doesent have power to it, with the truck on lights on truck off etc. my friend suggested maybe i need a hot wire from the battery to that prong on the trucks connection. i Related searches for 7 prong wiring diagram for 2012 f150 3 prong plug wiring diagram2012 f150 wiring diagram pdf2012 f150 radio wiring diagramf150 wiring harness diagramwiring 7 prong trailer plug2006 f150 wiring diagramsfree wiring diagram 2000 f1502011 ford f150 wiring diagram