Wire and Function In A 7-Way Connector To Allow Brakes To Release When Backing Up A Boat Trailer

Question

Question:

A boat trailer I am going to pull has a fift wire required to release the brakes when backing up. Witch terminal in a seven wire plug EB or auxiliary?

asked by: Vt

1

Helpful Expert Reply:

The fifth wire that allows you to back up a boat trailer is the reverse function. Sending signal from the reverse function will allow the solenoid to disengage the surge brake function electrically. The reverse function is found in the center of the 7-way connector. I've attached a diagram to help.

expert reply by: Jason S

1

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Answer 1

It sounds like you need a Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Wire Hybrid Cord item #RM-152-1676-7 for your 2018 Jeep JL Wrangler Unlimited. This complete kit includes everything you need to connect your RV's…

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Answer 2

Since wire color codes are NOT universal, we always recommend wiring by function, rather than wire color. If you look at the Trailer Wiring FAQ article I have linked you to, you can see some diagrams showing the proper way to wire a vehicle and…

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Answer 3

Some drilling is required for the Roadmaster base plate kits if your 2007 Toyota Tacoma is a 2 wheel drive model. The 4 wheel drive and Prerunner models do not require drilling because there will be a bolt holding a frame cap in place. I have…

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Answer 4

The Adapter 4 Pole to 7 Pole Vehicle End Trailer Connector part #30717 can be used to adapt the 4-pin connector on your vehicle o the 7-way on the trailer side. You simply ground the 7-way plug and plug the 4-pin into the pigtail from the plug. If…

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Answer 5

Odd that your trailer has hydraulic surge brakes and a 7-way, but you do not need a trailer brake controller unless your trailer has electric brakes. So all you need for your 2016 Toyota Highlander with the factory tow package is a 4-way and then a…

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Answer 6

I checked the Featherlite Trailer website for specs on the model 3116 trailer but this part number returned no results. But if your trailer uses an industry-standard 50-degree a-frame design then the Demco A-Frame Trailer Coupler #DM16680-52 will fit…

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Answer 7

To find the reverse light circuit on a vehicle is pretty easy but it may take digging around in the door panels or interior panels of the vehicle. What you need to do is find the wires that lead into the reverse lights on your vehicle. Test both of…

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Answer 8

The message on the display of your Prodigy P3 most likely is Open Ground No Brakes, which indicates that the ground wire of the brake controller is not making a solid connection to your vehicle battery. To fix this you will need to check the…

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Answer 9

The easiest way to find the reverse wire circuit is to use a circuit tester like part #PTW2993. If your back up light is a separate light at the rear of your Highlander, use the circuit tester to check the wire when the truck is in reverse. Have…

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Answer 10

For your specific application, you can simply connect the Adapter 4 Pole to 7 Pole Vehicle End Trailer Connector, #30717, and mount it with #18138. Since you don't need brakes, 12 V charging power, or reverse lights on the trailer the other wires…

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Answer 11

A factory 7-way trailer connector isn't all you need to power a trailer's electric brakes. You still need a brake controller. Some Ford F-150s are equipped with a factory integrated brake controller, which you may have. If your 2012 Ford…

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Answer 12

The surge brakes on your boat trailer operate completely independent from the trailer wiring/connector so there isn't a pin on the 7-way that activates the surge brakes. The wiring that your mechanic was speaking of is that used for an actuator…

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Wire and Function In A 7-Way Connector To Allow Brakes To Release When Backing Up A Boat Trailer

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