Al Sheehan
New member
Looking for chassis electric diagram I replaced chassis battery and have no power . No ignition, dash gauges, lights, starter. This is a 1995 Georgie boy motor home on a P30 Chevy.
The mh ran all last year, battery was old and died over the winter. I replaced it and now nothing works from chassis battery . All the aux. lights in the mh work.Is the "salesman's" switch off? Might be by the door labeled main or something similar
This is a gas coach. The "salesman switch" is normally found on DP coaches.Is the "salesman's" switch off? Might be by the door labeled main or something similar? Try pushing it on and off a few times. Do you here a clicking?
Beginning with page 7-58 read section 7E of: https://www.gmcmi.com/wp-content/uploads/2014/05/P30-Chassis-Manual.pdfThe mh ran all last year, battery was old and died over the winter. I replaced it and now nothing works from chassis battery . All the aux. lights in the mh work.
I stand corrected. Didn't realize they were being used on gas coaches.I have a salesman switch on my P32 gas RV.
Same with our DP, as I realized when our Trombetta relay went out, and we only lost 12V to part of the coach.It in no way controls anything with the chassis.
He said the interior 12V lights work. That means one of the 2 positive battery cables is connected. It's all explained in the electrical schematics I provided him. I suspect you're right too, one of the 2 pos battery cables is unattached.The curious thing is it's dead as a hammer. For that to be true, that absolutely nothing works implies either a dead battery or an open cable. Even a crappy connection or half dead battery will show some sign of life, somewhere.
Mark B.
Albuquerque, NM
I have owned two gas powered class A motorhomes and each one had a switch that was labeled as a battery disconnect. Of the 3 RV forums that I frequent, only this one seems to call a battery disconnect a "salesman switch."The battery disconnect (aka "salesman switch") is for the house battery, though some rigs also have a disconnect for the chassis. But a chassis disconnect would not be referred to as a "salesman switch".
In my experience in electrical repair, if something worked before I "fixed" it and didn't afterward, the first place I would look is at the connections that I made. If you have a volt meter, measure across the battery, the again from the battery cable to ground. Might your battery polarity be reversed?The mh ran all last year, battery was old and died over the winter. I replaced it and now nothing works from chassis battery . All the aux. lights in the mh work.
IIRC the first place I heard that term was from a salesperson and, more specifically, it was a "diesel-specific thing".Of the 3 RV forums that I frequent, only this one seems to call a battery disconnect a "salesman switch."
Understood Kirk but, for clarification, there are battery disconnects and battery disconnects. Some are a rotary switch, usually near/adjacent to a battery, in series with the positive battery terminal. Others are the kind I described in my linked 'Trombetta' thread, where a rocker switch, often located near the entry door, operates a relay that is in series with the positive battery terminal.Tom, unless things have changed, there are salesmen out there selling most types of RV and all of them have battery disconnects in at least some models. My little KZ Sportsman travel trailer had a battery disconnect and I got it from a salesperson.
I am aware of that. I put one of the old knife switch versions into the 1975 Starcraft Galaxy 8 that we had and then used a Perko switch in the Great Divide that followed it. The 1987 Allegro had a manual one in the stairwell next to the door and our 1998 Cruise Master had a rocker switch on the dash for solenoid isolator. The 2012 Sportsman had a manual disconnect next to the entry door.there are battery disconnects and battery disconnects.