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Farmall & IHC Tractors Discussion Forum
Show Parts for Model:

300 starter/wiring problem

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Zachary Hoyt

08-26-2012 12:39:01
184.12.70.98



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I finished putting on all of the new wires today and got the 300 started with the starter for the first time. Everything seemed fine except that after about a minute of the engine running I heard an electric motor sound start up and realized the starter had begun to turn again. I was surprised and I immediately pushed in the ignition switch. The tractor engine stopped quickly but the starter kept running till I opened up the battery box and yanked the - cable off the battery. I am wondering if I wired it wrong somehow or if I need a new relay or start button. The relay has two small terminals on it, one marked S and one marked I. I ran a wire from the ammeter to one side of the start button and one from the other side of the start button to the S terminal. I ran a wire from the I terminal to the coil side of the voltage resistor. Another possibly relevant factor is that the starter drive got stuck twice before I was able to start the engine and I had to loosen the bolts and jiggle the starter to get it to pop back in. Any advice will be much appreciated. Zach

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riverbend

08-26-2012 20:21:47
184.12.40.14



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 Re: 300 starter/wiring problem in reply to Zachary Hoyt, 08-26-2012 12:39:01  
It sounds like you have your problem figured out.

I would suggest using different colored wires for different circuits. I am not a member of the correct police, but it makes it easier for me to see which circuit is which.

Greg



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504

08-26-2012 13:14:17
64.111.61.44



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 Re: 300 starter/wiring problem in reply to Zachary Hoyt, 08-26-2012 12:39:01  
There is only two things to go wrong, bad solenoid or a bad switch. The only time I found a bad starter switch, it was a push to start button, and it would stick in.



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Janicholson

08-26-2012 12:44:36
96.24.99.126



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 Re: 300 starter/wiring problem in reply to Zachary Hoyt, 08-26-2012 12:39:01  
It is wired correctly, the relay on the starter is sticking. A Ford relay from 1957 through the mid 70s almost all have the same connections. Be sure to hook the battery wire to the terminal closest to the S small terminal. Jim



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Zachary Hoyt

08-26-2012 13:14:34
184.12.70.98



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 Re: 300 starter/wiring problem in reply to Janicholson, 08-26-2012 12:44:36  
I went to ebay and found the Ford relays you described and have ordered one. I will just bend the metal strip so that it will connect to the terminal next to the I terminal. Thank you very much.
Zach



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Zachary Hoyt

08-26-2012 13:07:59
184.12.70.98



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 Re: 300 starter/wiring problem in reply to Janicholson, 08-26-2012 12:44:36  
Thank you very much. As it is now the battery is connected next to the I terminal, but that was how it was when I got it. There is a copper or brass strip that goes from the other terminal to the starter. I have a spare relay that I could put on, but it only has one small terminal, which I presume must be for the S wire. Would it be okay to cap off the wire from the resistor and try that relay? I really appreciate your help.
Zach

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Janicholson

08-26-2012 17:12:05
96.24.99.126



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 Re: 300 starter/wiring problem in reply to Zachary Hoyt, 08-26-2012 13:07:59  
Try wiring the one on it with the Bat term next to the S!! It might just work well. If the original had no connect to the coil from the I terminal, it would not be an issue. You can use the S only relay. Jim



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Zachary Hoyt

08-26-2012 17:48:32
184.12.70.98



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 Re: 300 starter/wiring problem in reply to Janicholson, 08-26-2012 17:12:05  
Thanks, I'll give that a try. I'm borrowing the battery out of the H, someday this week I hope to get to town and get the 300 its own battery. Zach



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