The compass needle will turn perpendicular to a current-carrying wire.
Isolate the bundle so that current is only flowing through the wire
where it shouldn't, move the compass along that bundle and where it
stops pointing perpendicular to the wire and starts pointing to the
real magnetic north is where the current is sneaking off to ground.
HTH.
Donald.
> From: "Rex Burkheimer" <rex@wmautomotive.com>
> Date: Thu, 28 Sep 2000 08:36:07 -0500
>
>
> One of the guys on wheeltowheel list posted this.
>
> >Any tips to do this? My ITS RX-7 developed one in the main power
> >to the ECU on Wed. and I need to fix it before Sat. for a race.
>
> Anybody here have any suggestions?
> Seems to me I remember hearing about an old trick involving a compass (?).
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