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Old 05-06-2013, 11:11 AM   #1
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Mystery Electrical Problem

I have a 40' American Eagle with a strange lighting problem. When there is no electrical hook up at all and all the batteries are turned off so the coach and chassis has no juice at all, I have a strand of accent lighting that won't go out. All accent switches are off. What makes it even more weird is the front part of the strand is off, and the back end is off, only the center is lit. kinda ghostly if you ask me. Anybody have any clues. My next step is to replace the strand.

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Old 05-06-2013, 11:17 AM   #2
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Hi and welcome to the forum.

Sure does sound strange. Before just replacing the strand, I would measure the voltage at the strand's power source. You shouldn't be getting any voltage there with the battery switches turned off, and if you are it needs to be investigated or it could lead to other issues.


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Old 05-06-2013, 11:24 AM   #3
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If you have a small solar panel for battery maintenance , like I do, try pulling that fuse. Maybe the panel is only suppling enough power to light some of the string.
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Old 05-06-2013, 11:27 AM   #4
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Sounds like you have a mystery corrosion issue. Like suggested, measure the voltage input to the string...I think you'll see 3-4V there. Even with the switches Off, unless you actually disconnect the battery grounds, there are several 'live' circuits in a typical Class A. One of those live wires is probably supplying voltage to the light string though corrosion or a single strand short.

For example, in my rig, even with the salesman's switches Off, my ceiling fan will run. I have no idea why it's wired that way. Probably an afterthought or a mistake at the factory.
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Old 05-06-2013, 01:40 PM   #5
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Ghostbusters! sorry, couldn't resist
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