Installing Brake Wiring on a Trailer

Updated 03/12/2018 | Published 03/10/2018

Products Featured in This Question

Deka Heat Shrink Butt Connector - 12-10 Gauge - Nylon Insulation - Yellow - Qty 5

(1125)

$7.47

10 Gauge Wire - Blue Primary - Per Foot

(107)

$1.65

12 Gauge 2 Conductor Jacketed (Brake) Wire Per Foot

(515)

$3.45

Question:

We have a trailer we are rewiring the axles are dexter and are wired inside the axle from drivers side to pass side. this is how it was from trailer mfg i see that you recommend wiring them in parallel could you send me a diagram of this im confused more then normal of how to do it with brake wires running threw the tube? all the connections from the mfg are on the left side of the trailer thx

asked by: Brian

Expert Reply:

I have attached a diagram for you to check out. This is taken from a helpful article on our site about wiring that I have linked for you as well.

The Blue wire on the diagram is what you want to pay special attention to. If you can route it through a tube for more protect then that's what I recommend doing.

The wire that should be used for the trailer brakes needs to be 10 Gauge Wire # 10-1-1. You can use Butt Connectors # DW05745-5 to make your connections. Simply splice 2 ends of the Blue wire together in one wend to branch off for the brakes on the other side of the trailer.

You can get a sample of what this looks like by starting at the 4:30 mark in the linked video. Please note that he is using Jacketed 2-Wire # 12-2-1 in the video.

expert reply by: Jon G