How to Find Which Trailer Brake Assembly Goes on the Left or Right Side of a Trailer
Updated 07/29/2025 | Published 12/02/2012 >
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Question:
Which side is left or right on a trailer when I want to install electric trailer brakes. Thanks
asked by: Ted
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.

Dan
7/29/2025
What happens if trailer brakes are installed on the wrong side

Product Page this Question was Asked From
Dexter Electric Trailer Brake Assembly - 12" - Left Hand - 6,000 lbs
- Accessories and Parts
- Trailer Brakes
- Electric Drum Brakes
- LH
- 6000 lbs
- Brake Assembly
- Manual Adjust
- 12 x 2 Inch Drum
- Dexter
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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