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Old 03-19-2018, 05:37 PM   #1
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What is this wire?

Hey all!
This is my first post! I recently purchased a 2018 Sunset trail 264BH. Being winter time after I brought it home I disconnected the battery and took it to the garage. Now, I swear I remember the black and white wire was connected to the positive pole on the battery but Iím second guessing myself since normally a black wire is a ground. Does anyone know what this wire goes to? I know the red and black wires but have no clue what this third black and white wire is and where it should be connected.
Thanks for your input!

~Chase
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Old 03-19-2018, 06:15 PM   #2
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Check out which one is for the tongue jack be retracing it.
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Old 03-19-2018, 06:18 PM   #3
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From your picture it looks like the hole diameter of both the red wire as well as the "extra" black & white wire have same diameter, thus I would conclude the red & black & white wire are both connected to positive battery post? Could that black & white wire be used for trailer safety brake cable, or front power jack? Could you call or email dealer where purchased, they should know. Is it possible to trace the black & white wire? Seems like a smaller gauge wire, so not for something that draws much current. Just my 2 pennies worth, perhaps another member may have a similar setup on their battery. My travel trailer only has 2 wires to connect to battery. Good luck!
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Old 03-19-2018, 06:51 PM   #4
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On my camper, and every other one I'm aware of
Black is positive
White is negative
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Old 03-19-2018, 07:37 PM   #5
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Originally Posted by Tonemeister View Post
From your picture it looks like the hole diameter of both the red wire as well as the "extra" black & white wire have same diameter, thus I would conclude the red & black & white wire are both connected to positive battery post? Could that black & white wire be used for trailer safety brake cable, or front power jack? Could you call or email dealer where purchased, they should know. Is it possible to trace the black & white wire? Seems like a smaller gauge wire, so not for something that draws much current. Just my 2 pennies worth, perhaps another member may have a similar setup on their battery. My travel trailer only has 2 wires to connect to battery. Good luck!
Hmm thatís what I was thinking maybe it was for trailer safety brake. I already tried to trace the wire but it goes into a sealed hole where all the other wires go. I also considered that it might go to the tongue jack but the wire that goes to the jack is a red coated wire and not black and white like the wire Iím questioning. I shot my dealer a text and pic heís going to see what he can come up with.
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Old 03-19-2018, 09:17 PM   #6
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garrett
sorry can't help with the wires, but I have a suggestion that might help in the future...once you find out where all those wires are placed before you take them off next year get a brother label machine and label them...some things we learn the hard way...
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Old 03-20-2018, 06:39 AM   #7
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Quote:
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On my camper, and every other one I'm aware of
Black is positive
White is negative

I should have added--
If you can get to/at the terminals on the brake away switch, and the tongue jack, you could then attach a wire long enough to reach from the wire you are questioning to those terminals and then check in between the two with a continuity meter.

I wouldn't count on the wire being the same color on both ends, or even the same from one trailer to another.
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Old 03-20-2018, 07:15 AM   #8
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Here is a simple diagnostics...don't hook it up after you connect the pos and neg . Try the tongue jack...if it does not work,then problem solved. If it still works then pull the break away connection and listen to the brakes for the humm.
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Old 03-20-2018, 07:45 AM   #9
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Great idea harley!
Some times we try to over think stuff and just make it more complicated.
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Old 03-20-2018, 08:22 AM   #10
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Quote:
Originally Posted by harley View Post
Here is a simple diagnostics...don't hook it up after you connect the pos and neg . Try the tongue jack...if it does not work,then problem solved. If it still works then pull the break away connection and listen to the brakes for the humm.
Smart two minute solution
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