electric - Fiberglass RV

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Old 07-24-2011, 12:47 PM   #1
Senior Member
Name: Mike
Trailer: uhaul, 84, 13CT
Posts: 101

Hello Everyone: I have a U Haul 13 CT, I'm just getting into it. My wiring looke like a upturned bowl of spaghetti. Two batteries with an original looking converter between. Does anyone know if my 12v interior items and my running lights are part of the same wiring or might they be separate? I don't want to mess with my running lights in the event I have to move it for some professional help. I have mixed thoughts about going all 110 and eliminating the batteries and such. Whatever, It needs elec help. Any thoughts would be appreciated. h.mike thanks.

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Old 07-24-2011, 01:01 PM   #2
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Francesca Knowles's Avatar
Name: Francesca Knowles
Trailer: '78 Trillium 4500
Jefferson County, Washington State, U.S.A.
Posts: 4,543
Hi, Mike

It's hard to say, given that it sounds like your wiring has been seriously messed with!
But ordinarily, interior lights are on their own wires, separate from running lights.
You might take a look at the wiring diagrams in the document center here to get an idea of how trailers were typically wired back in the day.
Here's a link to the Scamp diagram:Fiberglass RV - Document Center - WiringDiagram_Scamp

Hope this helps!


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Old 07-24-2011, 09:17 PM   #3
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Orlen Wolf's Avatar
Name: Orlen
Trailer: Eggcamper 2007 ('Wolf's Lair')
Posts: 309
The service manual for the 13 CT is available in the document center (see left sidebar). According to the manual the running lights and trailer interior wiring are separate.
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Old 07-25-2011, 12:06 AM   #4
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Byron Kinnaman's Avatar
Name: Byron
Trailer: 2006 Scamp 13' towed with a 2005 Dodge Dakota 4.7l Magnum W/full tow package (over kill)
Posts: 5,859
The running lights including tail lights, turn signals, brake lights, brakes, backup lights are NOT, or shouldn't be, part of the interior lights. porch light and any other appliances such as a fan.

The running lights, etc. are powered from the tow vehicle.
Byron & Anne enjoying the everyday Saturday thing.
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Old 07-25-2011, 07:28 AM   #5
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Name: Mike
Trailer: uhaul, 84, 13CT
Posts: 101
Thankyou Everyone for your great and fast responces. I won't mind digging a little deeper into this mess. I'd like to make it a bit neater and safer.. thanks again h.mike
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