Parts Needed to Add 7-Way to 2015 Ford F-350 Cab and Chassis
Updated 03/20/2026 | Published 03/17/2026 >
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Question:
2015 ford f-350 regular cab and chassis with utility bed but doesn’t have a trailer harness that I can find. I put a receiver hitch on and needing a trailer plug. Do they make a trailer harness that will plug into factory wiring harness?
asked by: Ryan G
Expert Reply:
Hey Ryan, if you want to find an OEM style harness that would provide a 7-way for your 2015 Ford F-350 cab and chassis you'd need to check with a Ford dealer. We can help but it would be with a setup that gets hardwired in like with the part # C58044 and then convert to a 7-way you'd need an adapter like the part # 37185.

Pauly K.
3/20/2026
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Product Page this Question was Asked From
7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- No Converter
- No Tow Package
- 4 Flat
- 7 Blade
- Plug Only
- Pollak
more information >
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John S.
3/19/2026
You will need the T harness adapter from Ford, if you want the trailer battery charge circuit to work you will also need a relay and fuse for the battery junction box, and a trailer brake controller kit either from ford or aftermarket.