This is in response to Jon's point about the Parliament 2002, XLII. It's this coach: http://www.parliamentcoach.com/PREOW...PHOTOSPECS.htm

Hadn't seen it on any previous coaches. It monitors voltage/amperage and keeps you from screwing up something in the coach if you have bad power.

The benefit here is that if your alternator isn't working right and the inverters are both drawing heaving Bulk to recharge the batteries, it won't let current in until you override it. So you can figure out the problem yourself.

I don't remember what the gizmo is, but a guy could call Parliament talk to them about it if a guy wanted to.