Anything on the green circuit, including the stabilser, could be shorting to
ground and causing your problem. If it were a relatively constant short
then I would expect a sudden increase in 'normal' load, like the turn
signals, to blow the fuse as soon as you switch them on. This could lead
you to think the turn signals themselves were faulty, which would not be
correct if the partial short were on the stabiliser, for example. If,
however, all circuits work normally for a while, then the fuse blows, I
would suspect an intermittent short - altogether a more difficult beastie to
locate.
Permanent partial shorts can be located by putting a low-wattage bulb in
place of the fuse and disconnecting various components and in-line
connectors till you see a big difference in brightness.
Intermittent shorts can be located by making up an in-line fuse of lower
rating than standard with a male and a female spade and connecting it in
series with various components in the green circuit, one at a time. When
your in-line fuse blows and not the normal fuse, you have found your faulty
circuit.
PaulH.
-----Original Message-----
From: David Sylvain <niosh@pop.ma.ultranet.com>
To: mgs@autox.team.net <mgs@autox.team.net>
Date: 05 December 1998 03:27
Subject: Blown fuse
>I have a 72 B which I put on the road last week -- just in time for some
>great top-down weather here in southeast Massachusetts. The B is running
>great, except for a couple of minor glitches -- one of which involves the
>fuse for the tach, fuel gauge, temp gauge, & directionals. The fuse blows
>every now and then -- I replace it, & everything is fine for a while. The
>gauges seem to be reading OK until the fuse blows. Could the voltage
>stabilizer be causing the fuse to blow? Any other ideas?
>
>Thanks
>
>Dave Sylvain
>72 MGB
>
>
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