Trailer Brakes Lock Up When Using Hopkins 7 Pole To 6 Pole Adapter # 47549 on 2001 Dodge Truck
Question:
hello, I have an 01 dodge custom pipeline rig, it has a 6 pin connector and a tekonsha p3 controller. just bought a new trailer and it has a 7 pin. so i found a 6 x 7 adapter and the brakes lock up right away can u help? I would rather cut off the 7 pin on the trailer and go with a 6 pin But also be able to plug the new 6 pin trailer into the chevy which has a 7 pin. make sence ? the 7x6 is one piece vs. the 6x7 is two pice with 6inch of wire THX agian Bill
asked by: Wldbil
Expert Reply:
There are two accepted ways of wiring a 6-way connector. One uses the center pin as the 12-volt power accessory feed, the other uses the center pin for the brake output circuit. It sounds as if your vehicle and adapter are wired differently, locking up the brakes as soon as the trailer is plugged in.
The Hopkins 7 Pole To 6 Pole Adapter, part # 47549, that you have referenced will allow the center pin to be wired as a 12V lead or a brake lead, whichever is needed to match your trailer. It comes wired up as the 12-volt lead, but it can easily be taken apart and rewired for the center pin to be for the electric brakes. To wire the center pin for brakes then the blue and black wires will be switched.
To test the pins in the 6-Way connector at the rear of your vehicle, you will need to use a circuit tester like, part # PTW2993. First, ground the alligator clip to the vehicle chassis and touch the test light to the center pin. If the light in the tester lights, then the center pin is hot, 12 volts.
If the center pin is for brakes, it will only have power when the brake pedal is applied or when the manual brake lever on the brake controller is activated.
I am including a link to a FAQ wiring page that has a diagram of the connector and the connections inside the connector.
Products Referenced in This Question
Product Page this Question was Asked From
Adapter 7-Pole to 6-Pole - Universal
- Trailer Wiring
- Wiring Adapters
- Single-Function Adapter
- 7 Round - Blade
- Plug Only
- 6 Round
- Hopkins
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