Electrical Problem Solved!!!!! (Duh!)
Ok....so......after much trembling and gnashing of teeth, and after fearing for my family's life, I have solved the electrical mystery. And I feel pretty stupid.
What was happening was, upon firing up the microwave, the power draw from the service increase substantially. For some reason, the power supply was not able to provided the demanded power and therefore for some reason, the power converter panel would shut of the AC power and convert over to the 12V system. This is why the lights only worked.
After surmising what could be the problem, I went out to the back of the trailer and jiggled my SO Chord connector and......voila.......case solved!
Pretty stupid. We have been having some horrendous winds and what not and I guess maybe the connector loosened just enough to reduce the amount of power able to transfer into the trailer and causing a fault which triggered shore power off and 12V power on.
Anyhow, case is solved and have had NO problems. We have even loaded the trailer with three portable heaters and ran the micro, fireplace, and three of four (who needs four TV's to camp!!!???) TVs with no issues.
Thanks for everyone that chimed in...Now you can look for my new post titled.....My Norcold is Nor-Luke-Warm. Help!!!!