Parts Needed to Add Electric Brakes to a Trailer with Hydraulic Brakes

Updated 01/31/2023 | Published 01/30/2023

Products Featured in This Question

etrailer Electric Trailer Brakes - Self-Adjusting - 10" - Left/Right Hand Assemblies - 3.5K

(3124)

$169.43

10 Gauge Wire - Blue Primary - Per Foot

(107)

$1.71

Bright Way Trailer Breakaway Kit with Charger, LED Tester, and 5 Ah Battery - Side Load

(430)

$64.01

Easy Grease Trailer Hub and Drum Assembly for 3.5K Axles - 10" - 5 on 4-1/2 - Pre-Greased

(1789)

$102.78

Deka Heat Shrink Butt Connector - 12-10 Gauge - Nylon Insulation - Yellow - Qty 10

(1124)

$13.21

Question:

I have a trailer that has the hydralic surge brakes. I want to take the hydralic brake assembly off and replace it with a electric brake kit. Its it as easy as unbolting the hydralic and bolting on the electric kit. I realize I have to wire the electric brakes as well. I want to make sure im not missing anything thanks.

asked by: Kris M

Expert Reply:

To change from hydraulic to electric brakes you will need to swap out both the brakes themselves as well as the rotors for hub/drums. When it comes to the electrical side of things you'll need the wiring as well as a breakaway battery kit which will apply the trailer brakes in an emergency situation.

If you're needing a kit rated for 3,500 lbs then I recommend the following parts:

Self-Adjusting Brake Kit - # AKEBRK-35-SA
Hub and Drum Assembly - # AKHD-545-35-EZ-K (5 on 4-1/2"bolt pattern)
10 Gauge Wire - # 10-1-1 (sold by the foot)
Butt Connectors - # DW05745-10
Breakaway Kit - # 3802346

I've attached a helpful article about adding electric brakes to a trailer for you to check out. If you need a kit rated for a higher capacity just let me know!