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Old 04-30-2018, 06:21 PM   #1
Toy4us
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Pulled wires out of trailer converter

I was unhooking forme the trailer and when I pulled away the trailer plug snagged my hitch and pulled 4 wires out of the junction box connected to the trailer. I figured them all out but the black wire. There is no empty connectors left I dont no if it was hooked into one with the other wires. Any body have any pics or info on this
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Old 04-30-2018, 06:48 PM   #2
chuckster57
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Black is usually battery positive. There may be more than one black wires joined together.
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Old 04-30-2018, 07:08 PM   #3
Toy4us
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Quote:
Originally Posted by chuckster57 View Post
Black is usually battery positive. There may be more than one black wires joined together.
The black one are together on the right they were hot when checked. The one I can't figure out is one the left
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Old 04-30-2018, 07:12 PM   #4
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Can’t tell by the pic, I’m on my iPad so pic is small. In the junction box the blacks should be:
Positive from battery to trailer
Positive charge from Tow Vwhicle
positive charge from trailer converter
positive lead to break-away switch
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Old 05-01-2018, 02:52 AM   #5
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Looks like a loose unconnected blue wire, not black. From my quick research the blue should be for your trailer brakes. It also said not to rely on color coding as all manufacturers don't always conform.
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Old 05-01-2018, 03:09 AM   #6
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Quote:
Originally Posted by Tinner12002 View Post
Looks like a loose unconnected blue wire, not black. From my quick research the blue should be for your trailer brakes. It also said not to rely on color coding as all manufacturers don't always conform.

If it is blue, then it is the brakes. In every trailer I’ve had the opportunity to open the junction box, 3 wires are all the same,

Black is battery positive
White is battery negative
Blue is brakes
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Old 05-01-2018, 04:01 AM   #7
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Yes i haven't hooked the blue up yet. The black does not test positive anytime when tested.
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Old 05-01-2018, 04:11 AM   #8
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Pulled wires out of trailer converter

Quote:
Originally Posted by Toy4us View Post
Yes i haven't hooked the blue up yet. The black does not test positive anytime when tested.


It depends on where it goes. If it goes back into the trailer, it won’t show any voltage unless plugged into shore power.
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Old 05-01-2018, 04:22 AM   #9
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This is a picture of my box. 2018 Cougar 26RBS.Click image for larger version

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Old 05-01-2018, 08:41 AM   #10
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Quote:
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Yes i haven't hooked the blue up yet. The black does not test positive anytime when tested.
The black may not have voltage applied until shore power or to vehicle is connected. On most trucks, the black will not have voltage unless the truck is running.
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