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Old 10-07-2008, 06:54 PM   #1
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1987 32' Excella
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Replaced running lights... none of them work!

Ordered 7 new running lights, installed them all nicely... Vulkem in the holes, etc. Black to black, crimped the whites with a spade connector to the other terminal, hooked up to the TV and nothing.

Any ideas out there (before I have to ask my wife where I put the voltmeter)?

Thanks,

Todd
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Old 10-07-2008, 07:00 PM   #2
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Are they LEDs? If so the polerity may be reversed.
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Old 10-07-2008, 07:36 PM   #3
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Did they work before? Running lights use the trailer skin for ground return. The light fixture must ground to the skin.
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Old 10-07-2008, 07:44 PM   #4
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Start with stupid. In my case that is usually the problem. Like, you sure the TV connection is hot? Then umbilical, 7 way and down the line from there. If all the lights are out the problem should be close to the source of power. If you had a wiring problem downstream of the 7 way more likely only some of the running lights would be out. Of course, t could also be Mickey and his friends.
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Old 10-07-2008, 07:49 PM   #5
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Not LEDs, they were original.

They worked fine before. They each had a black and white wire coming from inside the trailer, nothing was visibly grounded to the skin. Therefore, I connected them black to black, white to the other side of the new light terminal, exactly how they were before. Should I try to go black to black, white to the set screws?

Thanks for the replies.
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Old 10-07-2008, 07:51 PM   #6
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The brake lights and turn signals are working.
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Old 10-07-2008, 07:59 PM   #7
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A wiring diagram would help. Maybe some one reading this can send it to you. Black is hot White is ground. The skin should also be grounded. Check with a test light or use one of the marker lights black to black, white to trailer skin. Still no luck? Time to find the meter.
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Old 10-07-2008, 08:08 PM   #8
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I'm looking for it now, thanks for the help.

This place is great.
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Old 10-07-2008, 08:20 PM   #9
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Not LEDs, they were original.
Should I try to go black to black, white to the set screws?
If they are ordinary lights the polarity will not have any effect so there is no reason to change the wiring.

As noted above start at the source, the TV connection, and proof each leg of the wiring.

There may be a fuse in the marker light circuit of the trailer that failed.
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Old 10-07-2008, 08:22 PM   #10
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...Hate to be obvious, but have you checked the fuse for the Tail/Marker light circuit...you mentioned that the Brake lights and Turn Signals were working, but no mention of the Tail lights- if they're not working, you have something 'shorted' to ground, most likely.

I've got the same problem after replacing all the marker lights with LED units - I've got a short to ground somewhere, but haven't found it yet...I also installed three new Fantastic Fans at the same time, so I might have my 'short' up in the roof somewhere...

All my markers also worked before I started...I wish I'd checked each light as I progressed, so if I made a 'short' I'd been able to fix it and move on...hindsight is great...but I'm still looking for mine, and all those new markers are also sealed up on ours!!! I just wonder if I pulled a 'hot' wire loose inside the skin while rewiring...if so it's going to be hard to find...till then, I'm only traveling during daylight!!!

Please post back here if you find the problem before I do, I'll do likewise...thanks.
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Old 10-07-2008, 08:32 PM   #11
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Is there a fuse in your TV for the running/tail lights? If it blew,theres a good chance one of the wires got pinched,and shohted it out.You might need to check some of the lights

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Old 10-07-2008, 08:38 PM   #12
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Oh yeah----are the bulbs good? try to wiggle them with the power on.

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Old 10-07-2008, 08:52 PM   #13
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...have you checked the fuse for the Tail/Marker light circuit...
Quote:
Originally Posted by bibbs View Post
Is there a fuse in your TV for the running/tail lights?
I'll pursue this line of thought. I had the umbilical on my Argosy plugged into my truck. Decided I'd leave the truck lights on while changing out the dead bulbs. Blew a truck fuse first time. A call to the dealer put me in touch with one of their mechanics and his computer manual. From 800 miles away he steered me to three fuses and it worked out fairly easy. Your results may vary...
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Old 10-07-2008, 08:52 PM   #14
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The good news... if they were working before then you probably have power to the fixture. I have to replace all of my lights, but I've already found some wiring issues at the junction between the whip and the trailer wiring harness. On the positive side, all of the wiring will be replaced eventually. On the negative side... eventually seems like a long time some days.
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