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Old 08-15-2013, 08:35 PM   #1
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1973 21' Globetrotter
Houston , Texas
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New clearance lights ( wiring)

I'm putting my trailer back together and will likely replace all of the original wiring. The old clearance lights ran off of a positive wire, the negative was grounded to the shell. The replacement lights I bought are set up with positive and negative wiring. So, for the eventual total rewire, should I use the ground-to-shell strategy, or run a negative wire ?

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Old 08-15-2013, 10:19 PM   #2
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2010 30' Classic
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South of the river , Minnesota
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Either will work. Electrical connections to the shell are a possible source of trouble. By wiring the negative connections together and attaching them to a common ground, you can end up with more reliable lighting over a period of many years.

That said, I grounded mine to the shell at each light, because I did not remove the interior panels necessary to get access to the wires.

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Old 08-15-2013, 10:23 PM   #3
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Hi, run new ground wires, it will be so much better. I've worked on campers with no ground wires and stripped mounting screws; No fun trying to get them all working.

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Old 08-20-2013, 05:26 AM   #4
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Depends if your interior shell is removed currently. I was not doing a full shell off resto so I ditto Jammers method on our replacements and ground each light to the shell. I did this after polishing the exterior and getting ready for a road trip out West. We recently came back from the trip and we did 6300 miles through 9 states with no problems to the running lights-worked great and were brighter than ever!
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Old 08-20-2013, 07:30 AM   #5
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1973 21' Globetrotter
Houston , Texas
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Well, it turned out that I must have been seeing double when I reported that the new lights had a positive and negative wire, because when I went to install them, the negative was set up to ground to a fastener through the shell, and there was only a positive wire. Anyway, all new lights are in place, just need to run the new wiring and test.
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