John Deere Compact 650

[Bigr1959]

Morning All,
I have inherited my fathers JD 650 and and it needs some work but runs well. A friend of my dads went a little crazy and bypassed the starter and put a push button in, I am putting this back together now and have run into an issue. I have put a new key switch on it and have a service manual so have figure out most terminations, not sure if it is an aftermarket starter or not but looks like original. (When I pulled the dash one wire on the push button start had came unhooked so do not know where it went) the other went straight to starter). Nothing under dash was hooked up so trying to fix it as well. There is a relay under ther but not sure for what, there are three wires that could hook up to it but only two connectors.

So here is the question.
There are two terminals on the starter. One is small and is on the side nothing attached to it . The one on the bottom has several wires on it, I have the battery on it, voltage regulator on it. On the key switch I have a wire from the starter to terminal B , I have R1-R2 going out to T Stat, BR goes to fuse block. Where does the wire from C terminate to? It looks like the same point on the starter where the voltage regulator and battery are. I cannot find any other points on the starter except the small one and I am assuming this should go to ground. Does C go back to the starter where the battery is? This is the circuit with the neutral switch and PTO switch.
Right now I have 12 volts to switch but when turned I get nothing at C as far as voltage go.
Thanks Mark

 

[JimRB]

Did this attachment make it? A basic wiring diagram for probably a slightly newer tractor.

 

[Bigr1959]

View attachment 402431 Did this attachment make it? A basic wiring diagram for probably a slightly newer tractor.

Yes and thank you, I still cannot tell if the C goes to the same terminal that the battery does

 

[JimRB]

On the diagram I have, the big connection on the starter goes to the battery+, feeds a fusible link with a white wire, and gets fed with a white /red from the voltage regulator of the alternator. The starter in my diagram has white wire that would go on a small terminal on the starter solenoid. This is fed from the neutral start relay. There is no need for a ground connection on the starter or solenoid. The starter gets its ground from being bolted to the engine.

There is a chance the solenoid also works on some sort of gas powered tractor and the extra mystery terminal heads over to bypass a ballast resistor. Where is the picture of your wiring diagram and of your starter? The manual I have does not mention a terminal C. It seems to say that A is the big connection that the battery + cable, the fusible link and the feed from the alternator attach to. Terminal B comes from the starter switch via the neutral and pto safety relay.

 

[Bigr1959]

On the diagram I have, the big connection on the starter goes to the battery+, feeds a fusible link with a white wire, and gets fed with a white /red from the voltage regulator of the alternator. The starter in my diagram has white wire that would go on a small terminal on the starter solenoid. This is fed from the neutral start relay. There is no need for a ground connection on the starter or solenoid. The starter gets its ground from being bolted to the engine.

There is a chance the solenoid also works on some sort of gas powered tractor and the extra mystery terminal heads over to bypass a ballast resistor. Where is the picture of your wiring diagram and of your starter? The manual I have does not mention a terminal C. It seems to say that A is the big connection that the battery + cable, the fusible link and the feed from the alternator attach to. Terminal B comes from the starter switch via the neutral and pto safety relay.

View attachment 402610

Yea this diagram is different. There are two terminals on the starter , a large one with the battery, voltage reg on it. Also on the starter is a small terminal. There is nothing hook up to it right now. I think this is where it goes but do not want to put 12 V at it if it might burn up starter. I guess I can just jump 12 v to it real quick and if it clicks that's where it needs to go