Installing A 7-Way On A 2003 Ford F-350 Super Duty
Updated 03/29/2024 | Published 03/28/2024 >
Products Featured in This Question
Question:
The harness you sent has a round plug were it connects to truck under bed. My tuck has a square plug.
asked by: Edward M
Expert Reply:
Hey Edward,
The factory connector for a 2003 Ford F-350 7-way socket should be round so it's likely that you're looking at a different wire harness. Could you send me some pictures and I can take a look?
It's also possible that your F-350 wasn't setup with a factory wire harness and you'll instead need to first install a 4-pole connector # C56032 and then install a hardwired 7-way socket # ETBC7 instead of the factory harness plug-in version # C55774 that you ordered.
Product Page this Question was Asked From
Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 7-Way Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- No Converter
- Factory Tow Package
- 7 Blade
- Plug and Lead
- Plug-In
- Visible
- CURT
more information >
Featured Help Information
Instructions
Continue Researching
- Shop: Curt Trailer Hitch Receiver - Custom Fit - Class V XD - 2"
- Shop: Trailer Hitch
- Shop: Trailer Wiring
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: How to Add a 7-Way and Brake Controller to a 2008 Ford E-450
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Q&A: Parts Needed To Install Trailer Hitch, 7-Way And Brake Controller On 2018 Chevy Express 3500 Van
- Article: Trailer Wiring Diagrams
- Q&A: How To Tell If a Ford Transit Has the Tow Package and Parts Needed To Add It
- Q&A: Will Bargman # 47-86-202 Replace # 48-86-202
- Q&A: 5th Wheel Wiring Harness For 2000 Ford F-350 With Square Plug
- Q&A: Is Progressive Dynamics Converter # PD4645V Lithium Compatible
- Q&A: SuperSprings Custom Suspension Stabilizer For 2019 Ford Transit T350
- Article: How to Choose the Right Trailer Hitch Class
- Article: Brake Controller Installation: Starting from Scratch
- Article: Brake Controller Installation on a Ford Full-Size Van
- Article: Hitch Mounted Cargo Carrier Information

