Posted by Bob M on December 19, 2007 at 07:19:56 from (151.190.254.108):
In Reply to: Farmall B Electrical posted by Matthew Kiesel on December 18, 2007 at 10:23:35:
Matt - Take a real close look at the backside of the ammeter! From your description (battery to ammeter wire gets hot and ammeter show discharge when the battery is connected...) there's a good chance the ammeter post NOT connected to the battery has become grounded.
Check carefully the insulating bushing in the clamp that holds the ammeter into the panel. The bushing can crack/crumble resulting in a short to ground at the ammeter.
However also check the wiring between the ammeter and the cutout/voltage regulator. A ground in this wire - or a short in the cutout/VR - could also be the cause.
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