Darl: I would and did on my Royal move those wires to the main 24V disconnect switch. When the switch is off for storage the wires receive no chance to drain. If you add a battery charger, I would suggest a 24V " Battery Tender". I also leave a 12V "Battery Tender" on my house batteries when stored. Sorry I did not get up to Reno to help you, not saying I would have found the proublem, but sometime two heads are better than one. Even an old head. Get your volt meter replaced, they are a must around our busses. I'm also adding an ampmeter to my box.