yandina wiring question?

[redtail]

I know the dual battery thing has been covered to death, but I've searched through all the old threads and only came up with diagrams for a standard relay, not the combiner.

Anyway, the PO wired up an aux battery but it's not done very well. The + of both batteries go to the starter terminal, and the power lead from the alternator also goes to the starter lug. So how should I wire these guys up? Anyone have a diagram or some suggestions, I'm pretty poor with electronics.

[82WestyMan]

I have a Combiner 100 but the best answer to your question is here, at the Yandina - Manuals page
http://www.yandina.com/manuals.htm
The important thing to note is the Yandina Conbiner is meant as a relay to combine 2 batteries that are on separate circuits together when either is being charged and separate them when they are not.
From the sound of your setup, both batteries are on the same circuit (since both positive terminal come together at the starter terminal)
How the Combiner works is when it senses either of the batteries is at 13.3v, the relay kicks in and combines the batteries so both get charged and then separated the two when charging is not present
_________________
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"I never did give anybody hell. I just told the truth and they thought it was hell" - Harry S. Truman
82 Westfalia - w/ a Raby 'Camper Special' engine

[backcountrymedic]

[redtail]

I didn't think it was right both batteries are wired to the starter.

So does the battery actually charge through the yandina? Could I wire it like this:

Main Battery + to alternator and starter.

yandina 1 red wire to main +, 1 red to aux +

aux + to raido / lights / whatnot?

Thanks for the help guys.

[backcountrymedic]

That sounds about right. Most folks run all of their interior accessory stuff off of the aux. battery, and just have the main for starting power. The Yandina does a great job of maintaining both batteries as needed. I also have an aux. battery charger wired into the 110 volt inlet from the outside of the van. Works great!
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Sector 9 longboard
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'01 Toyota Tacoma 4x4

[McVanagon]

Simple at best.

The only link between your aux battery and original charging system is the yandina.
http://www.thesamba.com/vw/forum/viewtopic.php?t=246921
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[redtail]

Sweet, Thanks for the help guys, I got it figured now. I don't know why the PO wired the second battery like that. Probably some idiotic fix for a flat starter battery.