Options for Repairing or Replacing Damaged Electric Drum Brake Magnet Leads

Question

Question:

I suspect I have a short in my trailer brake system.There is a break in the wire about a 1/4 inch from the back of the brake drum. Is lt possible to splice that wire from the inside of the drum and tie into the system to get this bad piece out.

asked by: Barry T

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Expert Reply:

You may be able to repair/replace the damaged magnet wire from your trailer's electric brake if you can get access to it. You may have to remove the wheel and hub to get access to the magnet wires to allow you to splice in a length of new 10-gauge wire like # 10-1-1 using a butt connector like # 05732-2. Another option is using Liquid Electrical Tape # SWC50122 but new wire is the better long-term fix.

Another option is replacing the entire magnet, which will include new wire leads. On the linked page you can see all replacement magnets for electric drum brakes. Match up the new magnet based on axle weight rating and size. Either wire can be used as ground or hot since the magnet leads are not polarized.

expert reply by: Adam R

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Answer 1

If your trailer has 7 wires running all the way back to the brakes, then yes, you can tap into the existing wiring. Each of your new brakes will have two wires for the brake magnet. One wire is for 12 volt power to the brake magnets and the other…

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Answer 2

If the wires are cut to short and are inside the assembly, you can make the connections inside using the Deka Heat Shrink Butt Connector - 12-10 Gauge - Nylon Insulation - Yellow - Qty 5 #DW05745-5 to ensure a good connection. If you don't…

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Answer 3

To add new brakes to your 1972 Apache Mesa Camper you would need to replace the trailer brake assembly as well as the mounting flange. The brake assembly bolt measurements are 2-7/8 center on center so they would not be compatible with your current…

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Answer 4

As long as one of the wires coming from the back of the hub is a ground and the other is a power, it does not matter which wire on the magnet goes to which wire from the back of the hub. I have included a link to a video of a magnetic brake…

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Answer 5

To wire your electric brakes you will want to run 10 gauge wire #10-1-1 to one of the brakes and run it to the other brake, using butt connectors like #05732-2 to connect them. The grounds will not be spliced, each brake assembly should have its own…

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Answer 6

The first error code, SH, you are seeing on the Prodigy Brake Controller (instructions linked below) means the brake wire sees a short circuit during idle condition. The second code, OL, indicates an overload condition during operation. For the first…

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Answer 7

First, do a visual inspection. You should make sure that the front of the magnet is not worn to the point where the interior copper windings are visible. Also, check the armature surface (inside rear of brake drum where magnet rides) is free of…

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Answer 8

As long as there is still a bit of wire still attached to the brake magnet on your #AKEBRK-35-SA, you can use a butt connector like the Deka Heat Shrink Butt Connector #DW05745-5 to connect a jumper wire from the sheared off end to the brake wire on…

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Answer 9

Typically the ground wire would be connected to the frame of the trailer using ground screws like #FA1131822 and a ring terminal like part #DW05740-1. Using heat shrink is always recommended to help prevent corrosion. Connecting the ground to the…

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Answer 10

I'm pretty sure trailer brakes themselves tend to have 12 gauge wire but we recommend using 10 Gauge Wire #10-1-1 for your brake circuit simply because it allows more electricity to reach the destination. By the time the electricity travels to…

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Answer 11

Your dimensions are a little unique but I would assume you have an AL KO brand axle with a 6k axle and the correct assemblies would be the part #23-105-09 and #23-106-09. This is 12 inch in diameter assembly that can attach with a 4 or 5 lug bolt…

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Answer 12

From the pictures you provided, you have a UFP DB-42 disc brake set up on your 2008 Trail-Rite. This isn't something we carry, but it looks like these systems use the #L68149 inner bearing and the #L44649 bearing, so you do have a common spindle…

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