I'm not an electrician, but I do have a question.

Is the flickering a regular, constant flicker or intermittent?

With the AC making such a big difference, my first place to look would be in the RV fuse panel, namely pull the panel and look at all of the connections behind it, particularly the main.

It sound like low voltage, which could easily be your extension cord. There might be a defective wire or connection in one of the plugs.

One other place, is the connector where your extension cord plugs into the RV. Barbara had one go bad on her horse trailer. The connector had screw-on connections for the trailer wiring to attach to and the ground had come loose inside the receptacle.

Just my W.A.G.

Ed

Last edited by APDDSN0864; 10/13/12.
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