Thanks everyone for the input. I greatly appreciate it! Purposely waited for the responses before I commented.
Mr T; I'm thinking the same thing.
javelin; It just started. Lights are factory installed, LED and original. I noticed the pulsating 2 trips ago, so it just started. Isolated to the main coach ceiling lights, bedroom lights are not affected. I have a tester to check for 60 hertz. Other than the refrigerator, no other loads. Batteries are charged. I'll be checking all connections.
12ACE27; I'll be checking connections at the ATS and generator too.
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