Do Electric Brake Magnets have Contonuity Between The Two Wires?

Question

Question:

Do the electric brakes have continuity between both wires coming from the mega? When I check it with the meter it seems they are grounding out.

asked by: Jason P

0

Expert Reply:

Hey Jason, thanks for reaching out. Yes, there should be continuity between the two brake magnet wires. One is for power and one is for ground, and either wire can be used for each function. Brake magnets are pretty simple to wire for this reason, so if you are not getting proper function on the wires it may be time for new magnets or new brake assemblies.

If you want to look into that I will just need to know the weight capacity of your axle and/or the brake assembly brand and size. Let me know in the comments below and I will get back to you.

expert reply by: Jesse M

0

Jason P.

1/27/2025

Yeah, my problem is my brake controller not seeing the trailer and I from what I understand that is because the signal is not getting through to the brakes perhaps not sure. Try different controllers same problem. I’ve been trying to tract this problem down they suggestions be great option I saw the controller might be open circuit. I don’t know but everything seems to be wired, right Ideas let me know

Jesse M.

1/28/2025

@JasonP Hmmm there are a few things that may be causing this. Usually when we see a brake controller fail to detect the trailer it is because your brakes are not grounding properly. First thing I would do is check the grounds of the brake assemblies. You may even try running the ground wire from each assembly back to the main ground of the trailer. It could also be something as simple as rust/corrosion on the pins of your 7-way so check that too. It could be an issue with your brake switch wiring on the vehicle too. The link below will show you our article on troubleshooting brake controller issues. Let me know how everything goes. I will be here if you need anything else.

Helpful Links

faq-brake-control-troubleshooting.aspx#m4

Answer 1

It is normal to have continuity between the brake(blue) wire and ground(white) wire. The electric trailer brake is an electromagnet when it has power it attracts to the steel inside the hub/drum. If you are having issues with your trailer brakes…

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Answer 2

That's a very good question, we tend to be extra cautious and say to use 10 gauge wire because that would be more than enough. When you get into longer trailers that will end up using a lot of wire the heavier gauge wire becomes more necessary.…

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Answer 3

The correct way to wire your breakaway battery, like the Hopkins Engager #20400, is to have the black wire from the battery connected to the 12V power on your trailer, and then the blue wire to your breakaway switch which, in turn, connects to the…

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Answer 4

The "Trailer Disconnected" error message on the dash with a factory brake controller is usually related to an issue with the blue brake output wire that runs from the brake controller to the 7-Way connector. The fact that the issue remains…

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Answer 5

A 7-way (female) vehicle socket like #PK12-707E has a single blade contact; these fit in between the dual contact surfaces in a (male) trailer plug like #54006-059, #277-000143 or #A10-7W10 and the connector (type BB) shown in your photo. Some 7-way…

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Answer 6

You will have continuity between both wire of the brake assembly. You can test the resistance with the Ohmmeter function on your Multimeter #PT89ZR. I have linked an article on testing brake magnets below for you to determine exactly what your ohm…

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Answer 7

If you are occasionally getting a "Trailer Disconnected" message on the dash of your truck the first place to look is the 7-Way connector on both the truck and trailer. You will want to inspect the connectors for any debris or corrosion…

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Answer 8

The picture of your 7-way is the biggest clue to the root of your problems. You have a ton of corrosion in there which can cause all sorts of problems from shorting circuits out like you mentioned (the smoking circuits) as well as causing…

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Answer 9

You can lock out your surge brake actuator although it's not always the prettiest of solutions. You need to either weld the pieces together or drill holes through it putting in bolts to keep it from moving. It'll work but it completely…

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Answer 10

I fell replacing your factory controller with an aftermarket controller is a better option, because aftermarket controllers tend to have less issues. With your 2015 Ford F-150 XLT having a factory controller you will need to have the ECU flashed…

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Answer 11

The blue wire coming from the back of your Tekonsha Voyager Brake Controller #39510 is for brake output to the 7-Way connector. This wire should only have power with the brake pedal depressed or the manual override activated on the brake controller.…

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Answer 12

There isn't anything like an autonomous controller that would step up if the factory controller fails. I'd simply bypass the existing factory brake controller. The GM ITBC, although it works better now than the earlier models has been…

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Do Electric Brake Magnets have Contonuity Between The Two Wires?

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