Should Brake Output Pin of 7-Way Have Voltage When Brakes are Applied without Trailer

Question

Question:

On a factory installed controller with a seven pin hookup should the trailer brake terminal have12v when the brake is applied without the trailer connected

asked by: Dick

0

Expert Reply:

Yes, if you test your brake controller output pin on your 7-way for voltage with the brakes applied and the gain set to the max you would see a full 12 volts. You should be able to adjust the gain to get varying voltages.

expert reply by: Jameson C

0

Answer 1

I do have an option for you but there isn't a traditional stop light switch circuit on a 2023 Jeep Grand Cherokee L. Therefore, if you want to use a wired trailer brake controller you'd need a stop light switch like the RoadMaster Stop Light…

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Answer 2

You are correct, you should only be getting output when the brake is applied, or the override switch is activated. It sounds like the controller might be bad, but to make sure, you should probably bench test it before tossing it. Use a circuit…

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Answer 3

It should be getting close to 12 volts if the power output is set to the maximum on the brake controller. Some brake controllers will not work properly if they are titled or turned to the side or if it has a leveler knob that is not level. Check…

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Answer 4

No you should not have constant power on the brake output pin, the blue wire should only have power with the brake pedal depressed in the vehicle or the brake controller manual override is activated. If the blue wire has a constant 12V then it is an…

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Answer 5

That is definetly unusual for all of the lights on the Hopkins 7-Way #HM48503 to be on at the same time, as that would mean that power is getting sent to all of the pins on your vehicles 7-way connector at the same time. Since there are no lights…

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Answer 6

If you have no power on the brake controller output terminal of your 7-way (which is the 5 o'clock pin) then you most likely have a short in your wire or a bad brake controller. I recommend starting your troubleshooting using a circuit tester…

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Answer 7

The blue wire coming from the brake controller to the trailer brakes is the brake power output wire used to tell the trailer to apply the brakes once given the response from the brake controller. Therefore, you should not have a constant charge to…

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Answer 8

There are many things that can affect the voltage on the brake output wire from your brake controller to your trailer brakes such as the power setting on your brake controller, how you are testing the wire and if you are testing it with the brakes or…

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Answer 9

The first thing to do is take a look at your owner's manual to locate any trailer fuses or relays and ensure they are all there and in working order. If they are, in order to determine the specific problem you will need to purchase a circuit…

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Answer 10

Most brakes also require a (break-in) period. Dexter says to get up to about 20-30 mph and use the manual override several times. They may also feel weak breaking because it is recommended to let the brakes (seat) into the hub for the first 200 miles…

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Answer 11

The first step that you will want to take is to jack the trailer up on properly rated jack stands. Make sure the trailer is suspended securely before replacing the brakes. Once you have your new electric brakes installed and the hub and drum mounted,…

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Answer 12

I believe you almost solved the problem when you swapped the wiring, but in reality you needed to use 10 gauge wire like part #10-1-1 (sold by the foot). You are experiencing a voltage drop due to the long distance of wire that's not thick…

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Should Brake Output Pin of 7-Way Have Voltage When Brakes are Applied without Trailer

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