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04-30-2018, 06:21 PM
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#1
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Junior Member
Join Date: Apr 2018
Location: La Junta
Posts: 4
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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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04-30-2018, 06:48 PM
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#2
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,356
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Black is usually battery positive. There may be more than one black wires joined together.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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04-30-2018, 07:08 PM
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#3
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Junior Member
Join Date: Apr 2018
Location: La Junta
Posts: 4
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Quote:
Originally Posted by chuckster57
Black is usually battery positive. There may be more than one black wires joined together.
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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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04-30-2018, 07:12 PM
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#4
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,356
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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
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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05-01-2018, 02:52 AM
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#5
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Senior Member
Join Date: Aug 2017
Location: Lafayette
Posts: 1,068
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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.
__________________
2015 Ram,3500,Dually,B&W,4.10s,Aisin,Limited,Silver
2018 Raptor,428SP w/full body paint
2012 Harley, Ultra Limited
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05-01-2018, 03:09 AM
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#6
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,356
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Quote:
Originally Posted by Tinner12002
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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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
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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05-01-2018, 04:01 AM
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#7
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Junior Member
Join Date: Apr 2018
Location: La Junta
Posts: 4
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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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05-01-2018, 04:11 AM
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#8
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,356
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Pulled wires out of trailer converter
Quote:
Originally Posted by Toy4us
Yes i haven't hooked the blue up yet. The black does not test positive anytime when tested.
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It depends on where it goes. If it goes back into the trailer, it won’t show any voltage unless plugged into shore power.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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05-01-2018, 04:22 AM
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#9
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Senior Member
Join Date: Dec 2017
Location: Lisbon
Posts: 551
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This is a picture of my box. 2018 Cougar 26RBS.
__________________
2018 Keystone Cougar 22RBS
2020 Ford F-350 XLT SC SRW 6.7l Powerstroke.
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05-01-2018, 08:41 AM
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#10
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Site Team
Join Date: Oct 2011
Location: Joppa, MD
Posts: 11,760
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Quote:
Originally Posted by Toy4us
Yes i haven't hooked the blue up yet. The black does not test positive anytime when tested.
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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.
__________________
Marshall
2012 Laredo 303 TG
2010 F250 LT Super Cab, long bed, 4X4, 6.4 Turbo Diesel
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