Re: another stupid 12 volt question

Posted by JerryU on October 18, 2000 at 04:37:24 from (204.39.45.3):

In Reply to: another stupid 12 volt question posted by Tom W. on October 18, 2000 at 03:52:25:

I assume we are referring to a common Delco 17si Alternator. These are the ones with a big terminal on the back and two little ones on the top.

The big one on the back is the charging terminal and can be run via #10AWG wire to the battery or any cable that connects to the battery.

The #2 terminal-right on top as you look at it from the back is a voltage sensing terminal and can be jumpered to the Bat termianl above.

Finally, the #1 terminal-left one- is the exciting terminal. It needs to be connected to a source that is on only when the iginition is on or you will drain the battery, i.e. coil lead from ignition switch. It needs either a resistor, diode, or sidemarker light hooked into it or you tractor, once started, will not shut off.

Only other way around it is to get a "one wire" alternator. I would do the #2 jumper and put a light in the #1 wire and run it to the coil (ignition switch side). Also the light will tell you if it is charging properly.

JerryU

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