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Old 10-26-2015, 07:19 AM   #15
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1975 27' Overlander
Flower Mound , Texas
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I take your point on wire being a wire regardless of color. It just gets very confusing to try to diagnose the situation when the functionality doesn't follow the expected wire color. So how/where would the new harness be run, front to back? Along the frame? At the front, from the 7-way connector, do you just cut a hole in the bottom of the skin to run the wiring to the back? When you get to the back, where would be the best spot to penetrate the trailer skin to get up to the back side of the lights?
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Old 10-31-2015, 06:20 PM   #16
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1975 27' Overlander
Flower Mound , Texas
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Update: As suspected, the wiring is not salvageable and needs to be replaced. Any thoughts on where to acquire a new wiring harness? Also, what are we talking about here as far as installation? Is this going to require taking skin off the belly and/or interior etc., or does someone have some first-hand experience accomplishing this job? Thanks for the good feedback so far.
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Old 11-01-2015, 06:58 AM   #17
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2005 25' Classic
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1965 22' Safari
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Is there any way to test the running lights, tail lights, turn signals, etc without plugging in to a tow vehicle? I am starting on a 65 Safari and it is already moved into the work area. Although I can get a truck back there, it won't be easy.
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Old 11-01-2015, 07:47 AM   #18
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Morrill , Nebraska
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Use a battery charger. Connect the black lead to a clean spot on the frame then connect the red lead to each of the wires on the UCord. See what works.


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Old 11-01-2015, 08:14 AM   #19
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1972 31' Sovereign
1975 31' Excella 500
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It will be easy to rewire the lights on the back of the trailer by running a new harness under the trailer, the top lights will be more challenging.




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Old 11-01-2015, 08:29 AM   #20
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1975 27' Overlander
Flower Mound , Texas
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Under the trailer as in along the frame? Anyone have any photos of such a job in progress and then finished?
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Old 11-01-2015, 09:14 AM   #21
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1972 31' Sovereign
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I have run a couple of 120V runs under my trailer, one for my inverter, and another for my Generator, I just put the wires in some type of conduit or protective sheathing and clamp it to the belly pan every foot or so.




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Old 11-01-2015, 12:09 PM   #22
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1969 31' Sovereign
Dover Foxcroft , Maine
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I had a similar problem with recently acquired '69 Sovereign. Got one weak tail light signal to one of Andy's LED lights (which was a replacement for the rusted out original cans). Presumably bad ground. So with a new trailerside connector wired to match the umbilical cord, ran a four wire trailer cable down the middle of the interior floor, out the rear window and thru the back up light holes with a ground wire screwed into the housing. Now have running and brake/turn lamps working - so ready to bring home end of this week. (Obviously no back up, charge or brake connection at the moment.)
Would appreciate any thoughts on how to check original wires from front to back. Or good way to run new wiring to back of unit (preferably without doing too much to the interior panels).
Thanks in advance,
Ed
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