Where is Best Place to Ground Brake Controller

Question

Question:

Where is the best place to ground my Primus IQ brake controller white wire to?

asked by: Jim

0

Expert Reply:

The best place to ground a brake controller will be back to the negative post of the vehicle battery.

I attached a picture that has a diagram of how brake controllers install.

expert reply by: Jameson C

0

click to enlarge

Answer 1

Brake magnet wires like what are on the brake assembly #23-106 that you referenced can be wired up with either wire getting the positive and the other getting the ground. As long as current runs through them it doesn't matter which wire gets…

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Answer 2

Yes, the red indicator light will illuminate on your Hayes-Lemmerz Energize III+ Electric Trailer Brake Controller #HA81742B when either the brake pedal is pressed or when using the manual override. This will happen both when disconnected from a…

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Answer 3

All you need for the red wire of your brake controller is a circuit that sees voltage only when the brakes are applied. If you wanted to run a wire to the fuse box to find a wire like you said that would work fine. Some people will also use the…

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Answer 4

In the diagram that you referenced, that I also attached here, the brake output circuit is a separate circuit that carries power to the trailer brakes totally separate from the brake light circuits. Also, the 12 volt power source is a separate…

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Answer 5

All breakaway switches are designed to be wired to the positive terminal of a 12 volt battery and to the vehicles electric brake circuit. The switch can be wired to your trailer battery if you did not want to purchase a separate breakaway battery.…

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Answer 6

There are several ways that you can cut off the power to your trailer brakes. The easiest option would be to simply unplug your brake controller. If the brake controller is disconnected, the brakes will not receive power. If your brake controller…

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Answer 7

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 8

Having the factory fuse is perfectly fine for an aftermarket brake controller. The benefit of a circuit breaker is that it can reset itself so you do not have to replace a fuse should it blow. So you are good to go with the 30 amp factory fuse…

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Answer 9

Traditionally (at least from 2004 to 2007) Ford has used a green wire on the brake switch to attach to the red wire on a brake controller. However, the only way to know for sure is to test the wires using a circuit tester like #PTW2993.…

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Answer 10

As far as function goes, the two controllers are actually pretty similar. The primary difference between the two is that the P3 uses what I would call a more user friendly display. Instead of an error code like what's displayed on the P2, the…

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Answer 11

You are correct, the Curt T-Connector Vehicle Wiring Harness #C56272 is not a fit for a 2019 Ford Edge; this harness is only a fit for 2015-2018 Ford Edge SE and SEL models; whoever told you it did fit your vehicle was mistaken. We carry the…

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Answer 12

What you are describing is normal. When you turn on your headlights the running lights of your trailer should illuminate. The running lights are dimmer than when the bulb is being used as a turn signal or a brake signal. Basically the trailer…

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