Ferguson TO-20 Alternator conversion

I installed a GE 3 wire alternator and I thought I followed the instructions but have a problem. I have a starter type ignition switch. I ran a wire directly from the hot side of the starter solenoid to the Bat. terminal on the alternator. Made a jumper from the 2 blade to the Bat. Terminal. Then I ran a wire from the ignition terminal on the switch to a resistor that was suggested and the a wire from the resistor to the #1 blade. Was told I needed this resistor or the engine would not shut off when turning the switch to off. Well The tractor starts, runs and the alternator works but when turning the switch to off to kill the engine it keeps running. I have to unplug this wire from the alternator to kill the engine. I know the alternator works as I can disconnect battery cable from the battery and the engine keeps running. What did I do wrong? Did I connect the wires wrong on the resistor?
Thanks in advance, Kermit
 
Looks like the resistor doesn't have enough resistance.

Needs to be 10 ohm or larger, or wire an instrument lamp in series with the wire from the ignition.
 
(quoted from post at 12:58:35 05/22/17) Looks like the resistor doesn't have enough resistance.

Needs to be 10 ohm or larger, or wire an instrument lamp in series with the wire from the ignition.
I installed the resistor that some one on the forum suggested I get from O'Reilley auto parts.I forget the P/N He suggested, Like RA-1 or AR-1 or something.
 
I think it was back in February that I requested info on installing this alternator. Gentlemen by the name John Deere, Richard L. responded and gave me the resister I needed and to get it at O'reilly auto parts.I'm hoping they will respond again.
 
I placed a 3 amp rated diode in series with the resistor. That stopped the continuing to run problem. The
diode has polarity to it as far as current goes. It will block in one direction. The band on my diode is
gone so do not know which way mine is. A diode checking meter would work to verify which way to put diode
in. Worse case would be to have to reverse the diode. Some put heat shrink over diode and leave in line.
I used small terminal block to mount resistor and diode.
 
(quoted from post at 20:11:31 05/22/17) I placed a 3 amp rated diode in series with the resistor. That stopped the continuing to run problem. The
diode has polarity to it as far as current goes. It will block in one direction. The band on my diode is
gone so do not know which way mine is. A diode checking meter would work to verify which way to put diode
in. Worse case would be to have to reverse the diode. Some put heat shrink over diode and leave in line.
I used small terminal block to mount resistor and diode.
Thanks Roy, Where do I get a 3 amp diode?
 
(quoted from post at 20:11:31 05/22/17) I placed a 3 amp rated diode in series with the resistor. That stopped the continuing to run problem. The
diode has polarity to it as far as current goes. It will block in one direction. The band on my diode is
gone so do not know which way mine is. A diode checking meter would work to verify which way to put diode
in. Worse case would be to have to reverse the diode. Some put heat shrink over diode and leave in line.
I used small terminal block to mount resistor and diode.

Thanks Mr. Gatewood, Which side of the resistor did you mount the diode? Between the ignition switch and resistor or between the resistor and the alternator? Does it make any difference?
 
Sorry I am slow getting back. I bought mine at Radio Shack. Think they are out of business.You need an
electronics parts store or something on internet like Allied. Location makes no deference just as long as
it is in series with the resistor circuit. Diode is somewhere around 1/4 inch in diameter;body about 3/8
inch long with wire leads coming out each end. It can be soldered to your wire leads, I used short terminal
block and placed leads under the screws. Crimp terminals could be used, but might cause connection
problems.
 

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