I assume you have an RV repair shop and not an automotive repair shop?
Fords have some complicated wiring in their ignition/battery light/charging control circuit that has nothing to do with the RV side of the vehicle. Could be a loose connection, a rodent eaten connection, a poor ground, etc. I would say it probably is not an alternator issue.
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Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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