Thank you all for your responses.
bgum...Onan 5500 Marquis Gold
schlep1967...Had already pushed GFI several times, black and red, with no clicking. If shore power is powering everything, should I assume no problem with GFI?
wolfe10...I had already done that.
BB TX...I don't see a reset button.
Yes, I totally agree that I need to isolate exactly which step is not putting out power. But I don't know how to do that and realize there is a safety issue. I have a multimeter (which I set on "Volts"), but don't know exactly where to touch the red and black probes. And with or without gennie running? I see on the generator a positive terminal and also the word "ground" on a piece of metal. I had opened the transfer box and touched the probes on screws holding wires in place (without gennie running), but no reading.
I sure don't know much about electricity, so need baby step instructions :)
