Well, I found the problem. The 12V line goes to the rear and comes up first to the rear a/c. The line (orange wire) was cut to add the rear a/c line and crimped poorly by the factory so that the wire going forward to the fantastic fan and front a/c pulled out of the connector. Had the installer checked the crimp by pulling on it, I doubt that the problem would have ever occurred. At least all of the wiring is accessible from inside the coach by removing the a/c filter grids. I redid all of the connections of the 12V line in all three places and checked the other wiring connectors while they were accessible.
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Bill
2000 SeaBreeze 1331 Ford
2004 Jeep Wrangler Blue Ox Tow Bar
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