![]() For most body wiring I commonly use the WT-56814 and WT-56815 splices. Google the size you need as they are available from different sources and you might save a couple of bucks. Each bag of 5 is a little pricey but well worth the expense IMHO. They are the most effective for making a reliable, weatherproof and lasting wiring repair or installation. use the Motorcraft kits that use a separate crimp connector and heat shrink tubing with sealing adhesive. Ford 7 Pin Trailer Wiring DiagramCurt Electrical Wire Ford F150 Trailer Wire Harness and Connector Ford Focus Trailer. Commonly I find the wrong size is used, the connector is punctured by the tool used for crimping and the sealant isn't effective and it just takes a little time for water to enter the connection and corrode. Butt connectors are almost always the point of failure, even the one's with the sealant. It is common for body installers to hack up wiring and they commonly wire the body lights to the trailer circuits. Replacing just the connector makes life much easier. I need to use a 12 volts equipment at the rear end, and I know that I should pin 3 for negative and pin 6 for positive, but I do not have. Especially for the cab and chassis trucks with dump bodies because they tend to take a beating. I have a 2003 F350 suoer duty pickup, and I would like to view the electrical path (wiring diagram, wires colors etc.) from the battery to the rear 7 pins connector. That Hopkins kit is essentially what has been the standard OEM set up for some time now and I agree that the plug-in harness is far superior than the wired up connectors. Great prices, same day shipping, thousands of 7 pin connector ford reviews. No trans or engine problems Lotsa power!!! NEVER any issues in the 20 years since I purchased. Here's a different model by Hopkins on Amazon. What's nice is the receptacle can be be changed out if damaged without having to disassemble and re-wire. The plug on the end, plugs directly into the Hopkins #40975 receptacle combo 7 blade/4 pin So I have to connect the wiring in the kit, to the vehicle wiring with butt splices and shrink tubing. The trailer dealer however, had the replacement plug with about 3' of wire as a kit. The body company cut the factory plug off and wired in the 6 pin. It would have a blank in the plug to protect from the elements. ![]() The plug at the end of the wire harness ended at the rear frame. Brake controller gets plugged into factory plug under steering wheel. If you ordered a tow pakage, they added the fuses and relays in the power distribution box in the engine compartment. The most common wiring configuration is as follows: yellow wire for left turn and brake lights, green wire for right turn and brake lights, brown wire for tail lights, white wire for ground, blue wire for electric brakes, and black wire for auxiliary power. Im trying to see if I can update the wiring harness from the 4 wires to all 7. I purchased the Trailer Backup Camera and Trailer TPMS system, but my truck is not recognizing them. My 2021 only has 4 wires feeding the 7-pin connector. The F series have the same wire harnesses. 2021+ Ford F150 - 7-pin trailer wiring harness - Hey all. I stopped at a local trailer dealer and they me straight on the factory wiring.
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