"I am also noticing that perhaps my STARTING BATTERY is draining my house battery when I have the charger on - further leading me to believe there is something wrong with either the switch (which is turned "off" when I charge) or the isolator, or both. 2 position (ON / OFF), single pole marine battery isolator/master switch with fixed control knob and square body profile. BTW the starter battery is probably far too big unless you have a very large engine. You dont say what size alternator you have, but unless it is small output and you have heavy usage on your service batteries, a booster is probably unnecessary. if battery #2 wasn't connected, I would not get a reading from my gauge if the switch was set to #2.ĭoes this help anyone troubleshoot whether it is my isolator, switch, both, (or something else?)Īnd just saw an typo in my previous post - what I meant to say above is: BEP Marine switch cluster which has isolator switches and VSR all in one unit. (and if the switch is set to the #1 starting battery position, it will start)įor what's it's worth, this is a "new" problem, meaning that my switch previously worked - i.e. However, if the selector switch is off, the boat will not start, so I presume they go through the selector switch. Waterproof 100/150/200A Manual Reset Circuit Breaker Switch 12V Car SUV Marine Boat Battery Isolator Disconnector. I hope it helps Let me know if you have any. OK - the wires from the starter go into a corrugated hose wrap and "dissapear." I am unable to determine by tracing whether they go directly to the batteries or through the selector switch. 8.7K Share 476K views 1 year ago Boat How To's I put together a little wiring demonstration to help you understand basic dual battery boat wiring.
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