> The voltage loss problem you refer to does not apply to all isolator
> installations either. If you buy the version built for our Bosch
> alternators it tells how to modify the voltage regulator to overcome
> this drop. I don't approve of the isolators for this and other reasons
> but lots of people use them with good results.
I'll second that with 1st hand experience when you modify the
alternator / vr you now have lost the ability to be able to just drop in std
off the shelf alternator
& you cant just remove the isolator from your charging setup because the alt
is now dependent
on the isolator/alt modification to function  so now a fault in the isolator
leaves you stranded unless you got a soldering gun to un do the alt mod ..
its butt ugly

used to have a sure power isolator now using the 1315 dual it is the perfect
setup for the van