Bill,
Just a quick comment on the relay.
Of course, everyone can make up their own mind,
and I respect everyone's opinion.
But, the way I see it, with respect to the relay:
In my Bentley (1980 to 1991 vanagon):
on page 97.33b, camper from '86,
They call the relay a "refrigerator 12 volt heater relay".
The main wire to the relay from the dash is a 2.5 mm
cross-section wire.

On the page that you mentioned, pg. 97.222,
(I think this page is for a weekender with a dual battery setup?)
the relay is called "battery cut-out relay".
The wire going from the main battery to the aux. battery
is a 6.0 mm cross-section wire.

I might be wrong, but my assumption is that those 2 relays
are different in size. Also there is a big difference between
a 2.5 mm wire and 6.0 mm wire.

So, you can see in our westy full campers, the
refrigerator 12 volt heater relay setup is not as strong as the
relay setup on pg.97.222.

Harald
'90 westy

 Bill wrote:
> Actually, if you look at the wiring diagram on page 97.222 of the Bentley
> you will see that the relays that came on Vanagons from 1986 were ment to
> work with an auxillary battery. Weather the stock wiring was adequately
> designed or not I don't know. I do know that this set up seems to work
fine
> on my 90 Westy Syncro.