What is the Amperage Draw of a Brake Magnet on a 12 x 2 Dexter Brake Assembly with Round Magnets

Question

Question:

I need to know what is the amp draw on a single round dexter magnet. Also how is the magnet mounted to the lever that makes the brakes move, I cant see on the picture of it how it mounts.

asked by: Weldon O

0

Expert Reply:

On a 12 inch brake assembly magnet, you should be getting 3.2 to 4 max amps at 12 to 13 volts. We have an FAQ article that covers testing brakes and brake magnets that should be helpful to you. I have included a link to it.

Replacing the magnet is pretty easy. On the control arm that holds the magnet there is a spring. The hole in the magnet goes over the upright part of the arm and rests on the spring. Then, you replace the clip that holds the magnet to the arm. I made a short video demonstrating this for you.

expert reply by: Michael H

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Answer 1

For testing this I recommend a Multimeter #PT29ZR to check the different components of the braking system. You can test the continuity of your wiring from the 7-Way to each individual brake magnet. It can help you identify if there is damage internal…

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Answer 2

It does sound like your Tekonsha Prodigy P3 #90195 has given you some diagnostic information that reveals you may have bad brake magnets. The magnets are bad if you have one braking axle based on the 9 amps recorded, but if you have two or three…

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Answer 3

It's rare, but possible the brand new magnets are all bad. Assuming you have tandem axles and a total of four 7,000 lb, 12 inch electric trailer brakes, you should be getting 15.0-16.3 amps at 12-13 volts. It is more likely the magnet's…

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Answer 4

It's a wire color difference but not a function difference on the pins of the 7-way. The difference comes from the fact that the two different styles are representative of two different areas that uses trailers. Traditional is usually seen on…

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Answer 5

Using the 6-Way Molded Connector w/ Cable - Trailer End #50-61-104 and a junction box like #38656 is a wise start. I recommend using the Ring Terminal - 12-10 Gauge Wire - 3/16" Ring ID #44-5310A for this fit. For your brake wiring, I recommend…

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Answer 6

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 7

If you are testing with the trailer connected to the vehicle (the first part of the FAQ, linked for reference) then the max amps at 12-13 volts for 4 brakes TOTAL should be 15-16.3 amps on 10 inch assemblies. This first section explains the process…

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Answer 8

I would check the magnets for wear before going on to test them with a meter. If the magnets show abnormal wear or if you can see the windings beginning to show through the friction surface of the magnet then they will need to be replaced. To further…

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Answer 9

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 10

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 11

To determine the size of the brake assemblies you need you have to measure the depth and width of the hub drum on the axle like what you see in the picture I attached. The most common size is 2-1/4 inch wide like the #T4071600-500 that you…

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Answer 12

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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What is the Amperage Draw of a Brake Magnet on a 12 x 2 Dexter Brake Assembly with Round Magnets

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