Re: Delco Alternator Wiring - Reversed Terminals

Posted by jdemaris on December 30, 2004 at 19:12:45 from (209.23.31.152):

In Reply to: Delco Alternator Wiring - Reversed Terminals posted by Jim Bloss on December 30, 2004 at 15:17:20:

The inability to shut off the engine is a common problem when using this system with a gas engine. Using a diode or a 15 ohm resistor in the #1 line will fix it, or . . . use an automotive type ignition switch that has an ignition terminal and an accessory terminal. Hook the accessory terminal to the #1 post of the alternator but keep the ignition feed hooked to the ignition post. This isolates the two so the alternator cannot backfeed to the ignition. In automotive use, either an indicator lamp or a resistor wire with 15 ohms resistance is used to feed the exciter circuit that goes to #1 on the alternator. #2, as stated earlier, can go directly to the large output post. Again, in automotive use, is usually does not and runs to the battery instead because of minute differences in voltage and voltage sensing. It won't make a difference on your tractor.

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