Patrick

First of all, thank you to everyone for your suggestions. Your support is tremendous. 
 
I crawled under again and checked all the wiring on the starter. I found a thin wire that was detached from a round eye connector that was bolted on with a small hex nut. The thin wire was shielded by a small corrugated hose.  Replaced the eyelet connection and viola. The starter was back in business. 
 
Not sure how the mechanic I had look at it missed the disconnected wire. 
 
Again, thank you everyone!

Never mind, I think it was just a bad connection with the park outlet. I swapped to a 30 amp adapter and the 30 amp plug and voila, power readings on all 4 gauges. Tried the 50 amp again and everything is fine. I noticed that the plug to outlet connection was not great due to where the 50 amp outlet was located and the cord plug tended to want to slip out. If it happens again I know where to look. 
 
Strange the way this manifested itself. I’m not an electrician but I think that only one of the two 110 volt lines was making a connection.