Trouble Connecting the 4-Flat Trailer Wiring to the 4-Flat on My 2008 Ford F-250
I put the lights on a trailer for my sister and the two connections are square corners and the connector on my vehicle has round corners. Do they make an adapter that can plug the lights up so I can make sure they all work right?
asked by: Archie V
After viewing the photos that you sent me, I have a solution to your problem. It looks like the weather shielding around the 4-flat on the trailer was manufactured different then the standard 4-flat. I recommend cutting the old plug on the trailer of and wiring in Curt Wiring Harness with 4-Pole Flat Trailer Connector, # C58044. The Curt end is designed to fit the plug that is on your Ford.
You could also try to trim back the weather shielding on the trailers plug to fit the one on your vehicle, but sometimes the fit will not be as good as replacing the plug end.
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: Brake Controller Installation: Starting from Scratch
- Article: Trailer Wiring Diagrams
- Article: Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)
- Q&A: Using 6000 lb Hubs on 7000 lb Axle
- Article: How to Choose the Right Trailer Hitch Class
- Article: How to Measure a Trailer Axle
- Q&A: 4-Pole Trailer Wiring Harness for 2007 Mercury Grand Marquis
- Q&A: My Vehicle has a 4-Pin Trailer Plug, but Trailer has 7-Pin Trailer Plug
- Q&A: What Size Tire Cover Would Fit Tire Size 205/75-15 on Cargo Trailer
- Article: Towing a Trailer? Let's Talk About Brake Controllers
- Q&A: What Gauge Wire Is Needed To Run Charge Line for Battery From Truck to Trailer
- Q&A: Factory Connection Point to Install a Trailer Brake Controller on a 2014 Ford F-150
- Q&A: Brake Controller Install Port on 2020 Thor Hurricane Motorhome