Posted by Brownie 450 on March 22, 2009 at 15:34:38 from (216.51.158.151):
In Reply to: Farmall M overcharging posted by Shawn in PA on March 20, 2009 at 21:40:03:
I usually use a resistor of 10 ohms--20 watts on the #1 terminal [turn on] to the alternator. At 12 volts, this works out to less than 2 amps draw for the turn-on current. I've never had a heating problem with any resistors used on conversions which I have done. I'm trying to guess where the extra current is going???? If you could unhook the heavy Bat. wire from the back of the alternator & then pull out the ignition switch to see what kind of current you are drawing then. Also, if you have access to a "hold against" ammeter, see what it has to say. Also, if possible, use an analog meter instead of a digital. The regulator is a high frequency device & will cause a digital meter to read incorrectly. I'm wondering if 1 of the rectifiers in the bridge at the back of the alternator is shorted. Jim N. has a valid point mentioning that the ammater might have been over-stressed & is reading incorrectly. A hold-against ammeter will prove this out.
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