View Single Post
Old 05-11-2015, 09:44 PM   #13
38Chevy454
Senior Member
 
Join Date: Mar 2015
Location: Cincinnati
Posts: 146
Default

Quote:
Originally Posted by bushpilot View Post
BOB - makes me wonder....

Ive got a "option" switch on my dash that I've NEVER been able to figure out what its for....
its NOT for the engine fan, and damn if i can find anything that it operates.
Quote:
Originally Posted by Bob86ZZ4 View Post
That's the switch United Specialties used on mine. It's down there on the lower left of the dash. I also have that extra backup light switch. The "option" switch is right next to that. I think if you are plugged in to shore power and stick a volt meter on the chassis batteries and see if that voltage matches the house battery voltage. Then switch that "option" switch and see if the voltage now matches the house battery voltage. That's how mine works anyhow.
I have the same "option" switch on lower left of dash (Mine is KW chassis), and was told it is the cutoff for the house batteries? I leave it in on position and so far it seems to charge the house batteries from the alternator. I should do some investigation with a volt meter to verify exactly.
38Chevy454 is offline   Reply With Quote