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Old 07-18-2012, 03:48 PM   #15
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Originally Posted by CrawfordGene View Post
Is the polarity bulb something that was installed only on vintage trailers? If you remove the bulb, do you cap the wire(s) to it or just leave the socket empty and ignore it?

I don't know when they stopped installing it. It's been on all the 70s models I've worked on.

You can just remove the bulb. If you remove the socket, then you have to cap the wires.


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Old 07-18-2012, 05:45 PM   #16
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I left the socket because it plugs the hole in the trailer. Just went to the "J Box" directly behind the socket and clipped the wires. I was in there anyway trying to find the cause of tripping a Shore Power GFI.

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Old 07-18-2012, 06:05 PM   #17
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Originally Posted by TG Twinkie View Post
I left the socket because it plugs the hole in the trailer. Just went to the "J Box" directly behind the socket and clipped the wires. I was in there anyway trying to find the cause of tripping a Shore Power GFI.
WOW! Thanks for the heads up on this. I wondered what it was, now I can disconnect it.
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Old 07-18-2012, 07:32 PM   #18
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Originally Posted by tphan
This whole "shell-shock" thing could be a plus if you're parked in an iffy neighborhood. Maybe you could have a hidden switch that would be "wired correctly" in one position, and "hands off my AS" in the other....I'm kidding, of course, but something akin to this has crossed my mind a time or 2.
Beat me to it....
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Old 07-19-2012, 09:08 AM   #19
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Originally Posted by Zeppelinium
You have an open ground and reversed hot in your shore power cable or in the socket on the shore power side. The 120V is shunted to the shell through the reversed polarity light and the open ground allows the shell to stay hot without blowing a breaker. This light should be disconnected in all Airstreams.

This dual error usually happens, rarely, at trailer parks.

Just to be clear, this is a small bulb that is in a jewel cover in the shell somewhere near the rear street bumper. The bulb is connected betweeen your 120V neutral in the trailer and the shell. This connection provides the sneak path for the hot when the shore hot is reversed.

This was it. The bulb was on I saw that. I'm on the road now and I hooked up last night and have no problem. I will. He k my garage plugs when I get home. Thanks all.


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