Troubleshooting Electric Trailer Brakes

Question

Question:

Just connect power on one side of tire brake and is good but when i checked the next brake, no power coming through. What could be wrong ?

asked by: John W

1

Helpful Expert Reply:

It sounds like you may be troubleshooting your trailer's electric brake assemblies.

Electric trailer brakes, whether they are 12 x 2-inch models like # AKEBRK-7-SA or smaller brakes like 7-inch set # AKEBRK-2, need a solid connection at both of their magnet wire leads. Electric brakes have two wires; either one can be connected to the brake circuit or to ground since the brake magnets are non-polarized. This is why both brake wires on # AKEBRK-7-SA and # AKEBRK-2 are the same color as shown in the linked photo.

If one brake is getting power and another is not the first thing to check is the ground. If your trailer setup has the brakes grounded to the frame right near each brake you can disconnect the ground wire so that you can sand off that grounding point. The ground should be made to clean bare metal, to a surface that is free of paint, primer, rust, grease and dirt. If the trailer brakes are wired to a trailer-mounted junction box like # HS381-9000 you'll need to make sure that the main ground from the junction box to the frame is likewise made to clean bare metal.

expert reply by: Adam R

1

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Answer 1

All of your electric brakes should have two wires coming out of them - one is ground and the other is power. It sounds like you may be in need of new brake assemblies, which are going to fit depending on the brake mounting flange you have and the…

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Answer 2

On any electric brake assembly such as the Electric Trailer Brake Kit - Self-Adjusting - 12" - Left and Right Hand Assemblies - 5.2K to 7K #AKEBRK-7-SA, one of the wires is for ground and one is for power but it does not matter which wire you…

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Answer 3

The Dexter Nev-R-Adjust electric trailer brakes can be manually adjusted. There are a couple teeth of the adjustment wheel that are exposed just under the lever that you referenced. I have attached a photo showing the teeth. You will likely need a…

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Answer 4

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 5

Based on the GVWR of your 2019 Jayco North Point 315RLTS it does seem like you have 7k axles. I recommend verifying this information to be sure. These axles typically use the #14125A outer and #25580 inner bearing found in the Timken #TMK92VR.…

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Answer 6

Hey Richard, thanks for reaching out! The Dexter DX7.5 Drop-N-Go Brake Actuator #099-175-00 is a great option for a replacement actuator because it's a direct replacement for the common Model 60 actuators that were popular in the '90s.…

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Answer 7

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 8

To determine the size of the hub assembly you need to purchase you have to determine which bearings are in the old assembly. If the old assembly has L44649 inner bearings, you would use the hub you chose #8-258-5UC1. If the inner bearings are marked…

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Answer 9

I'd be happy to help you out, John! To replace the brakes on your 5th wheel trailer you need the etrailer Electric Trailer Brakes #AKEBRK-7-SA which come with a self-adjusting feature so once you initially set them up you won't have to adjust…

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Answer 10

The recommended lug nut torque for your 7,000lb axle depends on a few factors like wheel size, stud size etc. Check out the attached photo which shows the torque specs for a variety of applications. I see you were looking at the Dexter Nev-R-Adjust…

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Answer 11

Traditionally, trailer manufacturers did not use electric brakes on boat trailers because the brake magnet wiring and trailer wiring did not always have the best insulation or water protection. These days, more and more manufacturers are using…

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Answer 12

I currently have three diffrent self-adjusting assemblies for your boat trailer with 10" x 2-1/4" electric drum brakes which are attached for you below. eTrailer Electric Trailer Brake Kit part #AKEBRK-35-SA (3,500 Axles) Dexter…

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