See the following link for good info that can help you.

http://www.geocities.com/harald_nancy/isolator.htm

- Laurence

----------------------------------------
 Laurence Smith
 Hamilton, Ontario, Canada
 90 Westy / 90 Subie 2.2 (in progress)
 87 GL / 91 Subie 2.2
----------------------------------------

> -----Original Message-----
> From: Vanagon Mailing List
> [mailto:vanagon@GERRY.VANAGON.COM]On Behalf
> Of patrick
> Sent: Friday, May 07, 2004 5:10 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: battery isolator
>
>
> I will be hooking up a second battery in my westy in the
> coming months. I have a battery isolator made by sure power
> model 24023a max amps 240. I took this off an ambulance
> that had an engine fire but all stuff in the back were
> fine. on the side of the isolator there is a diagram with a
> 1,A,E,2 representing the bolts on the top. What I need to
> know is this usefull for my battery connection and also
> what are the bolts on the top for. I imagine the 1 and two
> represent the batteries and the A represents the alternator
> but I do not know what the E is for. I also have several
> bosch 75 amp and 30 anmp relays, a solenoid, a cuople heavy
> duty diodes. Are any of these usable for this
> application?Thanks Patrick , Appin Ont, 85 westy
>