Adapter Needed To Convert A 7-Way To 5-Way And Lockout Surge Brakes

Published 02/02/2023

Products Featured in This Question

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

(21)

$59.67

Wesbar Adapter - 7-Way RV to 4-Way or 5-Way Flat - 18" Long

(83)

$35.94

Hook Probe Circuit Tester

(60)

$12.41

Question:

JUST BOUGHT A NEW BOAT AND IT HAS SURGE BRAKES. ALL MY TRUCKS HAVE STD 7 BLADE. I WANT TO CONVERT 5 PIN WITH SURGE BRAKES/SOLENOID INTO STD PLUG? THE 5TH PIN OR SOLENOID NEEDS TO GET POWER, HOW WOULD I WIRE THAT ?

asked by: ERIC H

Expert Reply:

If you have a factory 7-way on your vehicles they should be wired to the reverse light circuit so all you would need is an adapter to go from your 7-way to a 5-way like part # 707250. Typically this wire is purple or yellow and is the center pin of the 7-way. You can put your tow vehicle in reverse and use a tester like # PTW2993 to see if the 7-way is indeed wired to the reverse light circuit or just use the adapter to test if it is.

If it's not then you'll need to run a wire from the center pin of the 7-way to the reverse light circuit of the tow vehicle in order to power the pin and lockout the surge brakes when backing up. I've attached a help article below that goes over wiring a 7-way on your vehicle.

expert reply by: Kevin C