Adding 7-Way Connection to 2021 F-350 Cab and Chassis Without OEM Tow Package Wiring Harness
Question:
The photo of the trailer harness end is round in the photo. On my truck there are no round plugs there are three and two with a test light work with the lights and the other one works with the brakes dimnon low brake and bright when maxed out. I appreciate the help and hopefully you have the part Im looking for. Thank you
asked by: Patrick A
Expert Reply:
It sounds like you are missing the required factory 7-way connector for the # C55774 Curt T-Connector Wiring Harness to plug in to. This part will only work if you have the OEM tow package wiring harness.
I recommend the Tekonsha # 18252 4-Pole Hardwire Kit with Circuit Tester. This will give you a 4-way trailer connection. I also recommend the # ETBC7 Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat. This will give the the 7-way connection like the Curt part while also still allowing the use of a 4-way.
I have attached several review videos for your reference.
Products Referenced in This Question
4-Way Flat Trailer Connector w/ 72" Harness, Circuit Tester and Wire Taps
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- No Converter
- 6 Feet Long
- Universal Fit
- 4 Flat
- Tekonsha
more information >
Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Accessories and Parts
- Trailer Brake Controller
- Installation Kits
- etrailer
more information >
Product Page this Question was Asked From
Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 7-Way and 4-Pole Flat Connectors
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- No Converter
- Custom Fit
- 4 Flat
- 7 Round - Blade
- CURT
more information >
Featured Help Information
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