Tom/Barb wrote:
The battery boost feature that ties both house battery and chassis batteries together, Has a switch on my panel,When I push that switch does it send voltage to solenoid? or does it make a ground for that solenoid ?
Locate your battery boost solenoid. If it has a single control terminal, then it is almost certain to require a voltage applied to that terminal to activate. If it has two terminals, then one would be grounded by a wire and the other would be hot.....which one would be switched by the boost switch should be determined with a voltmeter.