Ed:
The ignition key positions you mention sure rings a bell, never thought about that, but I will take notice. I already have purchased a continuous duty solenoid rated at 200 amps, they did not have the 85amp in stock. They had indicated that a higher amp would not matter, after I inquired about it. Hope that are correct. Plan on getting an ignition switch also.
So, now I will put the alternator back on, and troubleshoot the sense wire. I may just take a long jumper from the chassis battery + terminal to the sense post on the alternator and then take a voltmeter to see what the alternator is putting out. If that brings the voltage to around 14 I will then start messing with the existing sense wire and see where the fault is. Does this sound reasonable?
By the time I'm done and hopefully successful, it will be good knowledge toward any future problems, Thanks to All who responded.
Also, the device that sits nearby the echo charger, with the echo charger fused leads going to, I believe is an isolator with three posts. This isolator then has Three battery size cables, one from each post going to two junction posts withe cables continuing to, one to the coach batteries and one to the chassis batteries. The junction post for the chassis batteries is where, I believe, the sense wire is routed to. The third cable from the isolator may be to the alternator, any thoughts on this? I will solve this when the rain stops.