Adding a 4- and 7-Way Trailer Connector on a 2004 Ford F-350
Question:
I have the male connection on my truck looking for the right 7n4 plug.
asked by: Melvin
Expert Reply:
In order to install a 4- and 7-Way on your 2004 Ford F-350 you will first need to install # C55265. This will plug right into the port in the picture you sent. It does look like there are some loose wires there that you will need to hardwire to a 7-Way. For a 4/7-Way I recommend # 37185. the 4-Way will plug into it and then you will need to hardwire the remaining wires.
White is ground and should attach to the truck frame. Blue is output to electric brakes. Black is 12 volt power. Purple will splice into the reverse light wire unless not needed.
The wiring for the electric brake output and 12 volt circuits should be present already under the truck. I have linked a help article that explains how you would access these wires. You would need to go down to the Factory Installed 4-Way section of the help article.
Another option if you do not want to hardwire in a 7/4-Way connector is to use wiring harness # 40167 and then replace the 7-Way part with 7 and 4-Way connector # HM40950.
Products Referenced in This Question
Adapter 4-Pole to 7-Pole and 4-Pole
- Trailer Wiring
- Wiring Adapters
- Multi-Function Adapter
- 4 Flat
- Plug and Lead
- 4 Flat
- 7 Round - Blade
- Hopkins
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Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug
- Custom Fit Vehicle Wiring
- Fifth Wheel and Gooseneck Wiring
- 10 Feet Long
- Custom Fit
- 7 Round - Blade
- Hopkins
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Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- No Converter
- Custom Fit
- 4 Flat
- CURT
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Hopkins Endurance Multi-Tow 7-Way RV and 4-Way Flat Trailer Connector - Vehicle End
- Trailer Wiring
- Trailer Connectors
- Vehicle End Connector
- Plug Only
- 4 Flat
- 7 Round - Blade
- Hopkins
more information >
Product Page this Question was Asked From
Ford Replacement OEM Tow Package Wiring Harness, 7-Way (Super Duty)
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- No Converter
- Custom Fit
- 7 Round - Blade
- Tow Ready
more information >
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