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Recommended Wiring for 2003 Ford F-250 for 7-way and 4-way Trailer Connection

Question:

Do you have wiring harness that plugs into2003 f250 superduty and seven way with bracket an flat four

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Expert Reply:

For your 2003 Ford F-250 Super Duty, we have the combined 7-way and 4-way option with the bracket available. If you have the factory 7-way plug, then we have the 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End # HM40975 that connects to your factory round connector. We also have the Curt # C55774 or Reese # 74682 if you prefer that style.

If you don't have any factory wiring, then you need to start with a 4 flat, like # 18252. Once you have a 4-way, you can then use the kit # ETBC7 to upgrade to a 7-way and 4-way with all the wiring functions. If you have the factory 4-way then you can use # 37185 to complete the wiring with the 12v and Brake controller wiring found in the rear frame rail.

You will still need to add a brake controller like # 90195 and wiring harness like # 3035-P for factory 4 way or factory 7-way to fully work. The # ETBC7 kit will be needed if you have no factory wiring for the brake controller.

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