shore power gone?

Stayed for 3 months in Yuma. Yesterday did a final run through. Tire pressures tanks water battery water cables etc. Every week I have fired up the onan and did so again yesterday after a fluid check. Shut it down and moved on with the day. Toward the end of the day I noticed we were running on batteries instead of shore power. Checked the following
verified shore power at the pedestal with a meter
checked all the 110 breakers
checked all the push fuses on the inverter
took the cover off the 110 auto switch in cord store area and made sure all connections were tight.

Still no shore power
After a drive to Phoenix today we can also note a full battery charge from the alternator

07 HR ambassador
cummins
onan 8

Thanks in advance as always
jw