The voltage readings (13.8) you're getting with your
isolator setup are too low.
The voltage at the alternator should read somewhere
about .7 volts higher than yours.
I would guess your regulator still makes some contact
on the alternator prong. That's easy to correct.
Look carefully at this picture on my isolator
installation website.
http://www.geocities.com/harald_nancy/images/isolator_6.jpg
If you have a problem still making contact inside the
alternator, you should also bend the metal tab on the
regulator, as you can see on my photo.
The regulator tab that the wire is soldered onto is
bent all the way up, far away from the contact
inside the alternator, to ensure that those 2
contacts do not touch.
I suggest you do the same, and maybe that will fix
your problem.
I can assure you if everything is done correctly,
the Sure Power isolator works just fine with the
Bosch regulator.
Another thing you can try is to put a little piece
of shrink tube insulator around both prongs,
alternator and regulator.
I'm leaving on a camping trip, so I won't be around
for awhile.
Harald
90 westy

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