641 starter problems

[atgmz]

I have a 641 that was converted to 12 volts. I am not a mechanic but I like messing with my tractor. Here's the problem, I removed the wires to the solenoid and the starter switch, when I replaced the starter, but lost the paper where I drew a diagram of where they went. My ignition has four screws on the back. One says "ignition", one says "battery", one says "accessories" the last screw sets right in the middle of the three and says absolutely nothing. My solenoid has four posts, two large and two small. One of the small one's has an "I" on it and the other has "S" on it. My starter only has one bolt. How do I hook up the whole mess, from key to starter. Please help...and thanks
Art

 

[john in la]

The other screw on the back of your key says "start".

You really did not give me the info I need to answer your question. The thing I need to know is did your tractor work on key start like a car or did you use the starter button on top of the transmission to start it.
A lot of crazy things get changed when a tractor is converted to 12 volts and I do not like to assume.

 

[atgmz]

Thank you for a quick response. It seems that just when I need it most, it's not working. The tractor started before by a turn of the key switch, and it worked before I fixed it? I changed the starter for the wrong reasons. My problem I've been told is that I have missing teeth on my fly wheel. The foot switch that was originally used was removed before I got the tractor.
Art

 

[atgmz]

Thank you for a quick response. It seems that just when I need it most, it's not working. The tractor started before by a turn of the key switch, and it worked before I fixed it? I changed the starter for the wrong reasons. My problem I've been told is that I have missing teeth on my fly wheel. The foot switch that was originally used was removed before I got the tractor.
Art

 

[john in la]

Please excuss how crude this drawing looks. I do not have one for your application because you are using a car starter relay.
I took one of my diagrams and fixed it so you could use it.

The S wire goes to the center plug of your key switch. B goes to battery and I goes to ignition.

 

[atgmz]

It works....thanks a lot John in LA. Sorry it took a while to respond but I was down for a couple. Once again thanks a lot....
Art