Parts Needed To Add Electric Drum Brakes To A Trailer

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Question:

Hello, I have a trailer that I want to add electric breaks to. It has flanges. I have a 2018 Silverado 1500. The trail has a flat 4 plug. Can you recommend the wire kit and plug that I need?

asked by: Jesse S

0

Expert Reply:

To determine the correct brakes for your trailer we'll need to first know the axle capacity. The Dexter Electric Trailer Brake Kit # 23-26-27 you were looking at are designed for 3,500lb axles. From there you'll need a hub/drum assembly, which will require knowing your bearing and grease seal numbers and your wheel's bolt pattern. If you can't read the numbers on your bearings and grease seal then you can measure the spindle at points B, C, and D to get the inner diameter so that we can verify the correct fit.

If you had a 3,500lb axle with a 5 on 4-1/2 wheel bolt pattern then you could use a hub/drum kit like the Easy Grease Trailer Hub and Drum Assembly for 3.5K Axles - Pre-Greased # AKHD-545-35-EZ-K. This kit would come with the bearings and grease seal and would already have the bearings packed for you.

From there you'd need to install a 7-way and junction box on the trailer. You can get both of these together with part # e99011. I would just cut off the 4-pole wiring where you set the junction box and save the rest of the cable in case you need some extra later on. The wiring functions for this cable are as follows:

Black: 12 volt power
Yellow: auxiliary or reverse signal
Red: left brake and turn signal
Green: running lights
Brown: right brake and turn signal
Blue: trailer brakes

From there you'll need to run 10 gauge wire # 10-1-1 from the junction trailer brake terminal to the brake assemblies. You'll also need to install a breakaway battery like the Bright Way Push-to-Test Trailer Breakaway Kit # 3802308. You'll also need a trailer brake controller in the Silverado in order to send the signal to the brake assemblies. I recommend the Redarc Tow-Pro Liberty Brake Controller # RED24FR along with the Redarc Plug-and-Play Wiring Harness for Tow-Pro Trailer Brake Controllers # 331-TPH-010. I have this brake controller in my Silverado and love how easy it was to install and use.

expert reply by: Kevin C

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Spindle Bearing Measurements
(click to enlarge)

Answer 1

In regards to the Bright Way Push-to-Test Trailer Breakaway Kit with 1-Amp Charger and 5 Ah Battery part #3802308, the red wire from the breakaway battery box goes to the battery charge line circuit also known as the twelve volt power supply on the…

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Answer 2

If your old axles have a 5 bolt brake flange the assemblies like Dexter Electric Trailer Brake Assembly - 12" - Left Hand - 6,000 lbs part #23-105 or Dexter Electric Trailer Brake Assembly - 12" - Right Hand - 6,000 lbs part #23-106 will…

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Answer 3

If your current springs have 5 leaves then going to a 7 leaf spring will increase the height of the trailer a little and make the trailer more susceptible to sway. Regarding capacity if you go with springs rated higher than what is required it will…

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Answer 4

Since Demco uses 3,500 drum brake assemblies part #DMSB24429M and #DMSB24428M what you'd need is similar 3,500 electric brake assemblies like the etrailer part #AKEBRK-35L-SA for the left hand side and #AKEBRK-35R-SA for the right hand side. To…

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Answer 5

I've checked with Lippert in the past and for their hydraulic leveling systems they recommend Dexron III or Mercon 5 automatic transmission fluid.

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Answer 6

Lippert does not recommend using ATF Type F Fluid as it is not compatible with Lippert hydraulic system #LC251910 seals because they will not work properly. The following automatic transmission fluid (ATF) recommendations for use in Lippert…

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Answer 7

When replacing the electric winch on your 2007 Rockwood popup camper, you want to look at the weight rating and mounting-plate bolt pattern of your current winch along with the dimensions to ensure fitment. It looks like the Superwinch LT3000 ATV…

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Answer 8

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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Parts Needed To Add Electric Drum Brakes To A Trailer

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