What Causes Trailer Brakes to Immediately Lock Up When Brakes are Applied
Question:
Just bought a 2004 fleet wood pioneer. I have the brake controller turned all the way down but when the brakes are applied going down the road they are breaking extremely hard and is jerking my truck. Help would be greatly appreciated!
asked by: Ryan
Expert Reply:
Most likely you have a short between the brake light circuit of your taillights and the brake output circuit for the brake controller. This is a pretty common problem as the right turn circuit on a 7-way is right next to the brake output circuit. Try putting on the right blinker. If the brakes lock up with the turn signal then you know that's the issue.
On the connectors look for either exposed wire between those two circuits or corrosion between them that would cause the short.
Product Page this Question was Asked From
Featured Help Information
Miscellaneous Media
Continue Researching
- Article: Trailer Wiring Diagrams
- Q&A: Trailer Running Lights Do Not Work but Brake Lights and Turn Signals Do Work
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: Brake Controller Installation: Starting from Scratch
- Article: Testing Trailer Brake Magnets for Proper Function
- Article: Troubleshooting 4 and 5-Way Wiring Installations
- Article: Troubleshooting Brake Controller Installations
- Q&A: Will The Curt Dinghy Wire Harness # C96JR Interfere With Activation Of A Blue Ox Patriot
- Q&A: Trailer Turn Signals Both Blink when Just Left Turn Signal is Activated
- Q&A: Trailer Lights Left Side Turn Signal and Brake Lights Not Working
- Q&A: Checking Trailer Lights Without Hooking Up to Vehicle?
- Q&A: Troubleshooting No Running Lights on Trailer but Turn Signals and Brake Lights Work
- Q&A: Parts Needed to Flat Tow 2023 Jeep Gladiator
- Article: Determining Trailer Tongue Weight