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07-30-2019, 07:55 PM
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#1
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New Member
Join Date: Jun 2018
Location: Jacksonville
Posts: 3
M.O.C. #22025
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Trailer Wire Diagram
Had a dumb mistake today, pulling away from the fifth wheel my 7 pin plug got caught and ripped all the wires out of the junction box. Opened the box and it all the wires came loose except for the the white wire. Does anyone have a diagram on how all the wires connect in the junction box? I've searched the site and can't seem to find anything.
The unit 2019 3791RL.
Thanks,
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07-30-2019, 08:29 PM
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#2
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Montana Master
Join Date: Feb 2005
Location: Haysville
Posts: 4,261
M.O.C. #3085
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White is ground / red is 12 VDC+ / green is RH turn and stop lights / yellow is LH turn and stop lights / blue is trailer brakes / brown is clearance lights and tail lights
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07-30-2019, 09:53 PM
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#3
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Montana Master
Join Date: May 2019
Location: Alton
Posts: 2,680
M.O.C. #24086
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__________________
Daryl and Marianne,
2019 3130re 20th Anniversary Edition
2016 F350 Lariat
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07-31-2019, 06:41 AM
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#4
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New Member
Join Date: Jun 2018
Location: Jacksonville
Posts: 3
M.O.C. #22025
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Thanks for the information on the wire. I have that taken care of. Now, I have two black wires and 1 blue wire from the trailer side. I know the blue wire is the electric brake, but I'm not sure if the 2 remaining black wires connect to the blue wire.
Called Keystone, that was pretty much a waste.
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07-31-2019, 07:05 AM
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#5
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Montana Master
Join Date: May 2019
Location: Alton
Posts: 2,680
M.O.C. #24086
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Black is usually a ground. You can use a multi meter to figure it out. Meter set to ohm's, touch one meter lead to the black wire and the other lead to the trailer chassis. If it goes to 0 ohms it is a ground wire. If it doesn't?????? More troubleshooting and tracing......
__________________
Daryl and Marianne,
2019 3130re 20th Anniversary Edition
2016 F350 Lariat
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07-31-2019, 07:06 AM
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#6
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Montana Master
Join Date: May 2019
Location: Alton
Posts: 2,680
M.O.C. #24086
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If I was home I would go open my junction box and take a picture for you ....
__________________
Daryl and Marianne,
2019 3130re 20th Anniversary Edition
2016 F350 Lariat
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07-31-2019, 07:51 AM
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#7
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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The only thing that I would mention is on our 2017 when I changed out the tail lights I found that the brake light and the turn signal wires were reversed.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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07-31-2019, 09:13 AM
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#8
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Montana Master
Join Date: Feb 2005
Location: Haysville
Posts: 4,261
M.O.C. #3085
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I think if you trace the black wires, they are going to your breakaway switch on the pin box. One goes to 12 VDC+ and the other to blue wire. Blue wire goes to brake wire from your TV usually blue as well. The breakaway wires connections don't matter which goes where.
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07-31-2019, 05:52 PM
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#9
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New Member
Join Date: Jun 2018
Location: Jacksonville
Posts: 3
M.O.C. #22025
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Thanks for the all the help All taken care of
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08-13-2019, 12:23 PM
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#10
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Established Member
Join Date: Jul 2018
Location: Granbury
Posts: 25
M.O.C. #22150
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Plug change
If you end up changing the plug Amazon has a really nice plug with about 6 ft of cord and a very nice color coded connection box.
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08-13-2019, 04:02 PM
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#11
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Montana Master
Join Date: Jan 2018
Location: Austin
Posts: 2,413
M.O.C. #21044
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Wires
I went out and took a pic of mine...maybe you can see what goes where.
__________________
MikenDebbie Aggie ‘77 in the sticks near Austin TX
2019 Chevy 3500 High Country DRW
2018 Montana 3921FB
Aussie Gus + Texas Heeler Jimmy
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08-13-2019, 04:43 PM
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#12
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Montana Master
Join Date: Feb 2005
Location: Haysville
Posts: 4,261
M.O.C. #3085
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For future responders ... the OP stated on 7-31 that he had it all taken care of and thanked all for the help. I'm sometimes guilty as well for not fully reading thru all replies.
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