Barney,
Thanks so much. That SOUNDS simple. I'll check it out today. BTW, are you
going to the Chicagoland rally in Abington in August? My wife and I are
planning on coming up.
Monte
----- Original Message -----
From: "Barney Gaylord" <barneymg@ntsource.com>
To: "MonteMorris" <mmorris@nemr.net>; "MG list" <mgs@autox.team.net>
Sent: Tuesday, June 18, 2002 1:56 AM
Subject: Re: blowing fuses
> At 01:33 AM 6/18/02 -0500, MonteMorris wrote:
> >I keep blowing the bottom fuse on the 67 B, .... How do I go about
testing
> >for a short circuit ....
>
> Disconnect all green wires from that fuse. Switch on ignition. Touch the
> green wires one at a time to the fuse output. When the fuse blows you
have
> the culprit. Leave that wire disconnected, reconnect all the others, and
> replace the fuse. The thing that does not work with that one wire
> disconnected is in the faulty circuit.
>
> Or if you don't want to blow one more fuse, disconnect all green wires
from
> that fuse, and check resistance to ground on each one. When you find one
> with less than one ohm to ground you have it. It will most likely be a
> dead short showing just about zero ohms.
>
> >Could the voltage stabilizer be causing too much currrent to be passing
> >through?
>
> Only if it's shorted to ground internally. Otherwise it only passes as
> much current as the devices it powers consume.
>
> >How do I check for, and isolate, a direct short using my multimeter ....
>
> Set it to ohms and use the lowest resistance scale (although many newer
> digital units are auto-ranging). Touch the test leads together, and it
> should read zero resistance (if not, install a new battery). Touch one
> lead to any good chassis grounding point and the other lead to the wire in
> question. If that circuit is shorted it will read zero ohms (or something
> very close to zero equal to the resistance of the copper wire). You need
> to disconnect and separate all of the green wires at the fuse block when
> you do this so you can tell which wire is causing the problem.
>
> Barney Gaylord
> 1958 MGA with an attitude
> http://www.ntsource.com/~barneymg
.
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