Instructions to Wire a Trailer for Electric Brakes

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Question:

I have a black and white wire coming from the brakes, I dont know where to plug them in the box to truck lead, color for color

asked by: Larry B

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Expert Reply:

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 metal surface on the trailer. I have included a diagram for you.

expert reply by: Leah S

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Haden S.

6/1/2020

W/ a 4 wire harness (green, yellow, brown & white). How do you wire the electric brakes from the junction box to the hubs? Which wires Tie together to get function? I have 2 green wires coming from the hub, a red & black wire coming from the axle to tie into the passenger side brakes & the white & black brake wire. How do these all tie together from the junction box to get the brakes to function?? Thank you.

Reply

Chris R.

6/4/2020

If you just have a 4-Way connector harness on the trailer this needs to be upgraded to a 7-Way so you can wire up the additional brake functions. I recommend using the etrailer Kit # e99011 for this application, which includes the junction box and new harness.

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Sam

5/26/2024

Hi Leah. Found this and it is super helpful. I just wanted to ask, my understanding is that there is no polarity as such with the electric trailer brakes. So any wire can be the ground. Can I ground any of the two to any suitable surface on the trailer frame?

Reply

Kevin C.

5/29/2024

@Sam Yes, either wire from a trailer brake assembly can be wired to power or ground, without issue.

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Answer 1

If your trailer has 7 wires running all the way back to the brakes, then yes, you can tap into the existing wiring. Each of your new brakes will have two wires for the brake magnet. One wire is for 12 volt power to the brake magnets and the other…

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Answer 2

Hey Anthony, It looks like there's a proprietary pigtail wire harness (p1072586) to connect to the factory plug behind the trim on the driver's side and the brake controller's wire harness. From what I can find some people say that…

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Answer 3

It sounds like you are asking what wire should be ground and which is power for installation of the Dexter Nev-R-Adjust Electric Trailer Brake Kit #23-458-459. The wires can be used for either, so if you want to use the black for ground you can, and…

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Answer 4

The attachment bolts for a 5-bolt brake assembly like the part #AKEBRK-6R should be torqued to 30-50 foot/lbs. If you don't have a torque wrench handy, if you tighten the bolts until the lock washers flatten out, you'll be pretty darn close…

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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

The biggest difference between Dexter brake assembly #23-459 and etrailer/AxleTek assembly #AKEBRK-7L-SA is the pad material. The Dexter assemblies use pads that are snapped off of a long strand of the material. The ones on the etrailer assemblies…

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Answer 7

I think you are going in the right direction. I would definitely replace the 14 gauge wire going to the trailer brake magnets with 10 gauge wire or larger. Usually larger than 10 gauge is hard to get into the trailer connector though. I would also…

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Answer 8

The spring seats on an axle can be moved and this is a whole heck of a lot cheaper than going with a custom axle which is your other option so that's what I recommend. I'm not sure what capacity you need but I have attached some options…

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Answer 9

In order to find the correct replacement hubs for your Shoreland'r boat trailer, you need to first know what bearings your current hub has. You will need to take apart your current hub assembly and look at the bearings themselves; wipe away the…

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Answer 10

Yes if you used a self-tapping screw like the part #FA1131822 you could use it to ground trailer wiring to a frame. Sometimes aluminum trailer frames aren't quite adequate so you may need to run a jumper wire to the main ground wire of the…

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Answer 11

I can help you pick out a brake controller and figure out if your truck has been wired already or not. First lets start with the brake controller. I highly recommend the Tekonsha P3 #90195, because it is a proportional brake controller which means it…

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Answer 12

The wires in the Dexter Trailer Axle w/ Idler Hubs #7359765-I allow you to add electric trailer brakes at a later date if needed.

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Instructions to Wire a Trailer for Electric Brakes

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