hbiss,
Yes this system is powered from the coach batteries, and they are claiming that the 12 v.d.c system on the coach is providing dirty power.

The coach also has a Trace inverter/ converter that provides 120 v.a.c from those same batteries when genset or curb power is not available, and of course it charges those batteries when power is available.

Incuded in this sytem is an auto start for the genset which allows you to run of the inverter, albeit in a limited state, until the batteries reach a certian voltage, at which time the genset starts and charges the bateeries. From there the cycle continues.

Sorry to have strayed so far from the original discussion. I guess in my original post I was trying to express my disbelief in what I heard the tech say: "cut of the ground" more so than look for advice. Of course, I am extremely grateful for all the advice you guys could dish out.


P.S. I should send you some pictures of the mess the wiring is in on these things for those that have never seen it. This customer has a Featherlight transporter (as used by NASCAR teams), a Prevost Coach (extremely high-end, think country music star) and a 20'x 110' luxury houseboat.
The poor quality of the way these things are built would amaze you, especially considering the price tags!!!