ym2002d alternator possibility

[winston1]

OK, i see 2 terminals and the stud. 1) Stud connected to Batt+ for charge 2) one of these spades is the charge light and the other needs a switched + wire from the ignition switch for voltage sensing. you may also have to change your charge light lamp for a 5W one if it's not already for it all to work correctly.And another thing, i told you that you were cluey enough to sort one out.....:thumbsup:

Thanks for your response Neat, my post wire goes down and hooks up right before the fuseable link that is right before the solenoid. Pretty confident this is correct. Closest spade to the post on the alternator is the exciter spade and I have it hooked up to a wire coming out of the old regulator plug that is energized when the switch is turned to the on position. This arrangement has the alternator charging.

Problem is the warning light. I know the green and yellow striped wire coming out of the old regulator plug goes to the charge light because I can touch 12 volts to it and light it up. I really don't understand how it works. If it takes voltage to light it, then seems like cutting the voltage off is what turns it off. I am thoroughly confused about it. Hooking it to the other spade on the alternator doesn't do anything. Anybody tell me just what kind of signal is suppose to be coming from that other spade on the alternator??? I feel pretty stupid and confused right now. :confused3:

 

[Neat 1500]

Thanks for your response Neat, my post wire goes down and hooks up right before the fuseable link that is right before the solenoid. Pretty confident this is correct. Closest spade to the post on the alternator is the exciter spade and I have it hooked up to a wire coming out of the old regulator plug that is energized when the switch is turned to the on position. This arrangement has the alternator charging.

Problem is the warning light. I know the green and yellow striped wire coming out of the old regulator plug goes to the charge light because I can touch 12 volts to it and light it up. I really don't understand how it works. If it takes voltage to light it, then seems like cutting the voltage off is what turns it off. I am thoroughly confused about it. Hooking it to the other spade on the alternator doesn't do anything. Anybody tell me just what kind of signal is suppose to be coming from that other spade on the alternator??? I feel pretty stupid and confused right now. :confused3:

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You need to put 12v+ on one side of the warning light and the other side to the alternator, job done. It will then operate correctly. it turns to a - when it is NOT running, therefore illuminating the lamp. When it is running it becomes a + thus extinguishing the lamp. Thats the basic mechanics of that terminal

 

[winston1]

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You need to put 12v+ on one side of the warning light and the other side to the alternator, job done. It will then operate correctly. it turns to a - when it is NOT running, therefore illuminating the lamp. When it is running it becomes a + thus extinguishing the lamp. Thats the basic mechanics of that terminal

I pulled the dash out far enough to access the bulb. It has a 3.4v bulb with two wires. One of the wires goes to ground. The other wire I have identified as the green and yellow wire on the regulator plug. Schematic shows it goes straight there without going through any other place. No voltage on the green and yellow wire with key in any position. Are you saying if I hook up 12 volts to the green and white, then take the ground loose and run it to the alternator spade that it should work?? I'm slow as you can see. :confused2:

 

[Neat 1500]

I pulled the dash out far enough to access the bulb. It has a 3.4v bulb with two wires. One of the wires goes to ground. The other wire I have identified as the green and yellow wire on the regulator plug. Schematic shows it goes straight there without going through any other place. No voltage on the green and yellow wire with key in any position. Are you saying if I hook up 12 volts to the green and white, then take the ground loose and run it to the alternator spade that it should work?? I'm slow as you can see. :confused2:

correct. do you mean 3.4watt? it needs to be a 12v lamp at 5 watts to work, the older alternators needed this but i am pretty sure the newer style with voltage sensing dont need a lamp that big but it wont hurt it. and yes ignition supply to lamp, other side of lamp to alternator and thats all it needs.

 

[winston1]

correct. do you mean 3.4watt? it needs to be a 12v lamp at 5 watts to work, the older alternators needed this but i am pretty sure the newer style with voltage sensing dont need a lamp that big but it wont hurt it. and yes ignition supply to lamp, other side of lamp to alternator and thats all it needs.

Oops :ashamed:, sure I meant 3.4 watts. I'll give that a try this morning and see what happens.

I am back with a success story. I did not change the bulb but hooked up as you dictated. I am charging with light out. Light comes on with key in run position, once she cranks, the light goes out. Thank you very much Neat 1500 and also thanks to all those who have given me input. I hope this will be a long term cure. Moving on now to the FX24D.

 

[clemsonfor]

did you buy a new tractor?

 

[winston1]

did you buy a new tractor?

No, talking about GWSMITH's FX24D.

 

[kenmac]

From what I,ve seen and read of your projects on this site, There wasn't a doubt in my mind that you wouldn't get it to work out

 

[Neat 1500]

:cool2: i knew you would pull that project off. i now think you will have many,many years of trouble free charging.