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Trailer Wiring Harness for 2021 Ford F450 Chassis & Cab, 4-pole and 7-way

Question:

do you have a trailer wiring adapter for a 2021 f 450 chassis cab? (Additional Informtion: Needs 4-pole and 7-way connectors.)

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Expert Reply:

For your 4-pole trailer lighting connection you will need a Tekonsha # 18252 Hard Wire Kit. To up fit this to a 7-way connector you will need to add the etrailer # ETBC7 Install Kit. Your 4-pole connector plugs into the back of it and it then you wire the 12-volt hot, and 12-volt brakes to it. When plugging the 4-pole in the back, use some dielectric grease to keep moisture out and deter corrosion. If you don't have any order the Edelmann # 11755 two ounce tube.


Keep in mind that this kit is for typical vehicles and since you have a C&C you will need more wire to get to the cab and engine compartments. You can purchase Deka # 10-2-1 jacketed wire by the foot.

If it were me I would buy a handful of Redline # A0500 Metal Loom Clamps, and Fastenal # FA1131822 self tapping screws to secure the wiring running to the front of the vehicle. I think they last decades longer than zip ties.

Finally, it sounds like you will need a brake controller unless your new F450 came with an in-dash version. I would recommend the Tekonsha # 90195 "Prodigy P3" proportional brake controller. This is the brand I personally use and I am very happy with the level of adjustments available and the smoothness of stops. Add to that the Tekonsha # 22292 wiring adapter for Ford trucks to make installation much quicker.

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