Exactly what do you mean by issues with lighting?
Is this with interior light or headlights/taillights?
Are the lights coming on? Are they flickering?
Are you burning up bulbs?
One of the common issues will be poor ground connections of 12 volt lights. These may be grounded by the mounting screws, or there may be ground wires attached to the fixture.
More information will help other help you.
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1973 Revcon 220 flatnose motorhome
Olds Toronado front drive with 455 cid engine
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