perhaps you haven't dug deep enough in that book.
I would expect it to be in there...

the relay under the driver's seat ..
in almost all westy's , since it's used to supply 12 V to the fridge while
under way, aux battery fitted or not .......
is clever.
  It energizes only when the alternator kicks in.
Exactly what you want ..
since you don't want both batteries joined when you turn on the key ..
you only want the starting battery in the picture then ..
and it automatically kicks into charging the aux battery ..or at least power
to the fridge for the 12V function, when alternator starts charging.

I even connect my red  cockpit LED floorlighting to that relay sometimes .
that nice circuit really should be in Bentley somewhere.

scott
www.turbovans.com

----- Original Message -----
From: "Frank Lee" <techedteacher@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, August 27, 2011 1:47 PM
Subject: Re: Aux. Battery relay study

> Me too.
> I don't see it in my Bentley Manual
> What up with that?
>
> 82'diesel camper.
> TechEdTeacher
>
> On Sat, Aug 27, 2011 at 3:47 PM, HotelWestfalia
> <zolo@foxinternet.net>wrote:
>
>> Hi to all,
>>
>> I would like to see a detailed study of the charging and managing system
>> of
>> the Auxiliary Battery's relay's wiring with identifying all the wires
>> where
>> they come from and where they going.  If there is one like that.
>> I would like to keep that info in my files to refer back to.
>>
>> Zoltan
>>