On Aug 9, 2009, at 7:44 PM, Scott Daniel - Turbovans wrote:

> little related story - my 'new' 85 Adventurewagon. has two batteries
> and a
> battery isolator, which is supposed to automatically switch in the aux
> battery after start up, which it does.
> Only trouble is....it eats voltage. Without it, I have 13.8 volts
> charging
> voltage on my starting battery.
> with it wired to both batteries per the instructions ...........I
> only get
> 13 volts, too low, on my starting battery.

Well....  I found the solution to that problem.  Whatcha gotta do is
modify the alternator so that the Sure Power provides the regulation.
Requires removing the regulator/brush holder. Bend the contact so that
the 'internal regulator no longer is in the picture and solder a lead
to hook to the Sure Power.  It's in the instructions for the isolator.

I resisted for nearly a year and suffered chronic low batteries.
Finally bit the bullet and hooked it up like the instructions say and
problem solved.  Go figure.

<http://www.countryhomescampers.com/pdf/Multibattery_Isolator_Instructions.pdf
 >

Group 3.

RTFM.

Jim