Date:         Fri, 3 Jun 2005 12:26:52 -0700
Reply-To:     mark drillock <drillock@EARTHLINK.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         mark drillock <drillock@EARTHLINK.NET>
Subject:      Re: adding a 2nd Battery; which relay terminal should I connect
              to?
Comments: To: Paul Guzyk <paullist@GUZYK.COM>
In-Reply-To:  <a06020400bec619a375ea@[10.0.0.103]>
Content-Type: text/plain; charset=us-ascii; format=flowed

NO, terminal 87 is not the one you want to connect to. Look at page
97.33b and you can see that the fridge relay has the main current pins
reversed from the aux bat relay diagram. It also has 2 pin 87s since VW
uses that relay connection as a junction point to also carry always on
power to the rest of the Westy kitchen. Pin 30 is the output pin for the
Westy fridge relay. You would want to piggy back on pin 30 to do what
you are considering.

The answer to you last question is, NO, that is not the best way to hook
up a 2nd battery. You should use a second relay, controlled by pin 30 of
the first relay, and switching a #10 wire run directly from the main
battery, to the second relay, out of the second relay a #10 on to the
second battery. I would use a 30 amp fuse at the main battery end of the
new #10 wire.

Mark

Paul Guzyk wrote:

> When I add a second battery to an 86-89 Westy, Bentley (97.34a) shows
> the positive line going to terminal 87 on the relay under the drivers
> seat.
>
> What do I do with the existing wire on terminal 87?
> Leave it connected also or disconnect it and tape it up?
>
> Is this the best way to hook up a 2nd battery with the factory relay?
>