How to Find Which Trailer Brake Assembly Goes on the Left or Right Side of a Trailer

Question

Question:

Which side is left or right on a trailer when I want to install electric trailer brakes. Thanks

asked by: Ted

0

Expert Reply:

The left side is the driver side, right side is passenger side. On a trailer brake assembly like # 23-105 the arm that the magnet is on points to the front of the trailer and the magnet always will be on the bottom. I have included a picture that shows what I mean. The matching right side assembly is # 23-106.

expert reply by: Michael H

0

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Eric

8/21/2024

A little confused here on the left or right orientation Of brakes. The curve is the arm leads forward and the magnet trails behind? Thanks Eric Stosius

Reply

Bryce D.

8/21/2024

@Eric Yes that's correct, the curved arm will point to the front of the trailer and the magnet will point towards the bottom.

Reply

Dan

7/29/2025

What happens if trailer brakes are installed on the wrong side

Reply

Robin H.

7/29/2025

@Dan they won't have the right amount of stopping power.

Reply

Answer 1

The right and left orientation is determined if you are standing behind the trailer looking towards the tow vehicle. The left side is the drivers side and the right side is the passengers side. Tthe shorter brake pad will always be in the front of…

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Answer 2

The correct hub and drum assembly replacement for your Lippert 4,400 lb axle is the #8-407-5UC3-EZ. This comes with bearings and a grease seal. If you need brakes as well you can use the #LC66WD, or for self-adjusting brakes #K23-478-479.

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Answer 3

Hey George, we do have the exact bearings, races, and grease seal you need for your 4,400 lb Dexter axle, and while there isn't a single kit with the parts, you can get them all individually. What you will need are the following: Bearings #L68149…

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Answer 4

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 5

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 6

Actually, there's a little more to it than that. The magnets on the #K23-478-479 are a little different, but the primary difference is the mounting bolt pattern. On a typical 3500 lb brake assembly, the mounting studs will all be 2-7/8 inches…

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Answer 7

I currently have four different self-adjusting assemblies for your boat trailer with 10" x 2-1/4" electric drum brakes. You can choose from the following: -Terran Axle Electric Trailer Brakes #TX97ZJ (3,500 Axles) -etrailer Electric Trailer…

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Answer 8

Since the trailer was off of the ground it would not take much voltage to stop the wheels from spinning so they may be getting power but they may not be getting enough power due to a short or wiring issue. But 9 times out of 10 weak trailer brakes…

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Answer 9

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 10

It could be a tow package fuse on the vehicle. Use the owners manual to find the locations of fuses/relays related to the tow package wiring to check them and replace as needed. If the issue is not a fuse or relay then you can test the vehicle side…

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Answer 11

When determining if you need 10 inch or 12 inch brake assemblies there are a couple of easy things to check to confirm the fit for your trailer. The first thing is you can measure the diameter of your hub. The second thing is you can look at the…

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Answer 12

There is no specific torque rating for the castle nut that holds your hub in place. We recommend tightening the castle nut down until it stops, and then backing it off to the next notch wheel the tang washer will fit into the castle nut. Over…

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How to Find Which Trailer Brake Assembly Goes on the Left or Right Side of a Trailer

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