Quote:
Originally Posted by JamieGeek
On Axis/Vegas units the button on the dash simply shorts the two batteries together, and thus you can start one with the other either way--at least that is the way it works on my 2014.
Much like jumping a car, however, you have to hold it down for a little bit so that the "dead" battery gets some charge before cranking things.
Starting the V-10 and letting it run to charge things up for a bit should also have worked.
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This subject came up a couple of years ago, and as I recall, the switch that connects the house and chassis batteries is a solenoid switch, so if the house batteries are too dead they won’t actuate the switch. I think the switch is powered from the house batteries but I’m not sure. We’d have to look at a schematic. It would make sense though since the most critical application is to start the vehicle engine using the house batteries when chassis battery is dead. For that reason I think solenoid is likely powered from house batteries instead of chassis battery.