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John Deere Tractors Discussion Forum

Wiring Diagram JD 1010

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08-14-2017 10:35:29

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This message is a reply to an archived post by Osage on August 19, 2009 at 12:24:18.
The original subject was "Wiring Diagram JD 1010".


I tried to create a wiring diagram for my 1964(?) 1010 RUS.

Also, I purchased a new starter selenoid and it has 4 terminals in stead of 3 terminals. NOt sure what to do with the extra terminal... Fighting with Autocad how to create a Jpeg to post my full schematic.

My new starter selenoid has 4 terminals... 1 battery and ammmeter voltage conection, 2 the starter motor, 3 "S" terminal, connected to ignition starter switch, and 4 "R" terminal.. for which i have nothing to connect. The instructions sat connect "R" to relay or resistor.

My Voltmeter also broken so i could not see how selenoid is wired internally. I think the battery and starter contacts are closed when it is engaged and I assume the S terminal when powered should charge the coil, but does the R terminal need to go to ground to complete the circuit?


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08-14-2017 11:31:42

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 Re: Wiring Diagram JD 1010 in reply to bstogsdill, 08-14-2017 10:35:29  

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Here is a copy of the wiring diagram which I have put together and I think may be correct for a 12V JD 1010. It is how my tractor is (or will be) wired (I dont have lights connected yet, previous owner had 3 toggle switches and hacked wires all over), i am going back to an original type switch.

I have completed rewire of everything except the lights. I used 2 or 3 sources and my tractor to make the diagram. I can not guarantee it is correct but matched what looked right on my tractor plus what I could make out from other diagrams. Sorry it is black background. Sucks to print but if any one wants the cad file I would be glad to email it or some how post it.

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08-14-2017 10:51:50

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 Re: Wiring Diagram JD 1010 in reply to bstogsdill, 08-14-2017 10:35:29  
One thing I just found reading a half dozen posts in a car forum.. it seems that the purpose of the "R" maybe is to bypass the ballast resistor during cranking only to make a hotter spark? My old selenoid did not have this and it had the ballast resistor hacked out and a replacement distributor so I dont know if I need a ballast resister at all? I heard they were used so that 6v coils could be ran on 12v?... but anyhow I think I can leave the R unconnected and the selenoid and starter wont know any different.

I may have a starter issue... I have a new selenoid and a new starter switch but it wont start.. the selenoid wont even click..I am wondering if it can be a loose starter ground (which is internal to the starter I reckon)? It used to crank fine and start then just acted like a dead battery .. intermittant issues for a few weeks then now just plays dead.
Thanks for any advice.

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08-14-2017 11:04:06

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 Re: Wiring Diagram JD 1010 in reply to bstogsdill, 08-14-2017 10:51:50  
You have the "R" terminal figured out. Unless you are running a 6 Volt coil and a ballast resistor and want to bypass the resistor during starting for better spark you can simply IGNORE the "R" terminal.

As to what coil you have:

In round numbers, a 6V coil will have a primary resistance in the 1.5 to 2 Ohms range and needs a resistor of approximately equal resistance ahead of it, if used on 12 Volts.

A "true" 12 Volt coil will have a primary resistance in the 3 to 4 Ohms range, again in "round numbers".

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