Was reading in the RV the other night (that's another story) when the lights dimmed then came back bright. Did the same later. Today I turned on the main lights (10 bulbs) and they seemed dim. I turne...
Your battery is fine. As you see the trouble is in the lighting circuit itself from the fuse out to the lights. Somewhere along that circuit there is a high resistance spot you need to find and repair causing that low voltage.
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