How to Wire Reverse Lock Out Solenoid on Hydraulic Trailer Brake Actuating Coupler

Updated 07/26/2024 | Published 06/08/2020

Products Featured in This Question

Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc - Zinc - 2" Ball - 7,000 lbs

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$213.36

Hook Probe Circuit Tester

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$12.94

Question:

Wiring diagram for actuator with reverse lock out

asked by: David K

Expert Reply:

I don't have a wiring diagram, but I'd be happy to explain it for you.

In order for the reverse solenoid on a Hydraulic Brake Coupler like # DM62VR to function, one of the two wires leading from it needs to be connected to the wire from the center pin of the trailer connector, which is typically the yellow or purple wire (use a circuit tester like # PTW2993 to confirm). The remaining wire is grounded to the trailer frame.

On the vehicle side, you'll need to make sure that the center pin of the 7-way is connected to the reverse lamp circuit.

I've linked to our trailer wiring help article, which you'll find helpful.

expert reply by: Mike L

Vincent

7/10/2024

I’m hooking up my boat trailer for the first time to my truck. Can I send you some photos of what I have in reference to the truck wiring harness and the boat trailer. Thank you