Check the warnings in the box on Bentley (in my thru 1989 issue) page 28.31.
(Yes, it's in the Digijet section but should apply to all Hall Effect
Units).
There's stuff there that may come as news to some.
Any chance you're doing something in your driveway to blow it up?
aljay

----------
From: "Scott A. Harvey" <SHarvey@CTS.UCLA.EDU>
Reply-To: "Scott A. Harvey" <SHarvey@CTS.UCLA.EDU>
Date: Wed, 8 Jan 2003 07:33:00 -0800
To: vanagon@GERRY.VANAGON.COM
Subject: Hall Unit Failure - Again

Looks like my hall unit has failed again.  Westy wouldn't start after
driving it and it being parked for about five minutes.  Turn the key and
nothing - electrical is fine but starter doesn't turn over.  The hall unit
has failed three times previously in about the last 25k miles.  And symptoms
are the same this time.
What keeps causing this?  Luckily, each time it's failed the Westy was
parked in the driveway.
thanks.

Scott A. Harvey
'81 Westy