Main Battery Switch

Stu Jackson · Mar 17, 2014

It all depends on how it's wired.

OEM 1-2-B Switch Wiring History http://c34.org/bbs/index.php/topic,4949.msg30101.html#msg30101

Warren Milberg · Mar 17, 2014

Try this: with engine off and DC power on, put the main switch to 1. Turn on a cabin light. Then switch to Both or No. 2. If lights do not flicker, you can do this with the engine on with out burning your alt. Diode. Just don't pass thru "Off" with engine running.

DianaOfBurlington · Mar 21, 2014

Avoid the 1-Both-2-Off switch

If the batteries are wired so that they can be used together, there's no reason to select between them. If your intention is to use one till it's at critical charge status and then switch to the other one, there's no reason to use them both together.

To spare the batteries short discharge cycles, shortened life and possible damage, either use them separately all the time or together all the time-- don't mix charge/discharge modes. I have never discovered any good reason for the '1-Both-2-Off' switch, if it is not for 'just in case' use during some unrelated battery failure.

Main Battery Switch

POPS701TURF

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Stu Jackson

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Warren Milberg

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DianaOfBurlington

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