Trailer Brakes Lock Up When Connected To Trailer Using 6 to 7 Pole Adapter
Question:
I purchased 68 airstream overlander with Kelsey Hayes magnetic brakes. Bought a 7 to 6 plug adapter to connect trailer to 2019 tundra with controller built in. When I plug trailer up to truck brakes on trailer energize and won’t release until I unplug from vehicle.
asked by: Alvin D
Helpful Expert Reply:
The issue you are having with the trailer brakes locking up as soon as the trailer connector is plugged in has to do with the pin out of the trailer side trailer connector in relation to the adapter. The most likely problem is that the battery charge line is crossed with the brake output circuit. In order to fix this you will simply need to just swap out the two wires on the back of the trailer side trailer connector or you can just rewire a new trailer connector on the trailer using the 7-Way Molded Trailer Wire Connector - 3' Long # H20042. I prefer the new trailer connector as it eliminates the need for an adapter which can cause issues down the road.
Product Page this Question was Asked From
7-Way Molded Trailer Wire Connector - 3' Long
- Trailer Wiring
- Trailer Connectors
- Trailer End Connector
- 0 - 5 Feet Long
- Plug and Lead
- 7 Round - Blade
- Hopkins
more information >
Featured Help Information
Instructions
Continue Researching
- Article: Brake Controller Installation: Starting from Scratch
- Shop: Brake Controller
- Video: Review of Dexter Trailer Leaf Spring Suspension - Replacement E-Z Flex Equalizer - 013-144-03
- Q&A: Wiring Configuration for Tekonsha Prodigy P3 Trailer Brake Controller 90195
- Shop: Tuson DirecLink Base Model Trailer Brake Controller - 1 to 4 Axles - Proportional
- Search Results: trailer brake controller
- Q&A: Electric Trailer Brakes Grabbing Hard on Trailer
- Shop: Miro-Flex LED Trailer Side Marker and Mid-Ship Turn Signal - Submersible - 16 Diodes - Clear Lens
- Shop: Thinline LED Clearance or Side Marker Light - Submersible - 3 Diodes - Clear Lens w/ Amber LEDs
- Shop: Dragon's Eye LED Clearance or Side Marker Light - Weatherproof - Oval - 2 Diodes - Amber LEDs
- Shop: Black Bracket and Single Wire Plug for Thin Line Series Trailer Clearance and Side Marker Lights
- Shop: Optronics Mini Red LED Clearance or Side Marker Light - Submersible - 2 Diodes - Clear Lens
- Shop: Optronics Mini Side Marker and Clearance Light - Submersible - 3 Diodes - Clear Lens w/ Amber LEDs
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Shop: Trailer Wiring
- Video: Choosing the Right Brake Controller
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Shop: Trailer Hitch
- Article: Trailer Wiring Diagrams
- Search Results: brake controller
- Video: Redarc Tow-Pro Liberty Brake Controller Review RED24FR
- Search Results: etbc7
- Q&A: Should I Get a Proportional or Time-Delayed Brake Controller
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Shop: Suspension Enhancement
- Video: Choosing the Right Trailer Wiring
- Search Results: trailer lights
- Video: Redarc Tow-Pro Trailer Brake Controller Plug-and-Play Wiring Harness Review
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
on Trailer Wiring
