brake wire question
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Logistics Pro
Joined: Feb 2000
Posts: 3,955
Likes: 47
From: Mesa
brake wire question
I'm trying to wire the brakes on my neighbor's flat bed trailer. The wires from the drums are both black. The wires from the plug are white and black. The white is ground, the black is positive from the brake controller. I was going to wire one black from each drum to the white wire and the other black to the black from the controller. Is this right? The way it looks now, the black supply wire goes to one black brake drum then the other black goes over to the other side then back to white. Like in series I suppose. It does not show connected on the controller this way. Ant tips would be great. thx
Junior User
Joined: Jul 2007
Posts: 60
Likes: 0
From: Elizabethtown, KY
After reading the post I was thinking that the brakes should be wired in parallel rather than series. I seem to remember some old science class experiment that shows two light bulbs in series are dimmer than two in parallel. Then I did a quick search and found this:
http://www.championtrailers.com/Elec...l%20wiring.pdf
This shows the brakes wired in parallel.
This shows that one of the black wires from the drums (it really doesn't matter which one) should go to go to the BLUE (or hot) wire from the controller and the other to the white (or ground) wire back through the connector. Don't rely on the hitch to provide a ground path!!
I hope this helps.
http://www.championtrailers.com/Elec...l%20wiring.pdf
This shows the brakes wired in parallel.
This shows that one of the black wires from the drums (it really doesn't matter which one) should go to go to the BLUE (or hot) wire from the controller and the other to the white (or ground) wire back through the connector. Don't rely on the hitch to provide a ground path!!
I hope this helps.
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
V10man, Excluding electric brakes, there are three wires running the lights. Turn signal and brakes share the same wire and bulb filament for the right and left sides. Tail and running lights would or could all use the same.
You have one tail wire, one for left side, and one for right side coming from the rear of the truck and commonly use the 4 wire flat plug. This is for in case what you see is different from the link.
John
You have one tail wire, one for left side, and one for right side coming from the rear of the truck and commonly use the 4 wire flat plug. This is for in case what you see is different from the link.
John
