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Tractor Talk Discussion Forum

john deere b

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joanthan s

01-15-2007 09:31:34




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hey guys, im and i got a new coil for a 1950 john deere b i have and im tring to get it running. the old coil had one black insulated wire, one red insulated wire, and one noninsulated wire. the new coil has one balck insulated wire, and one noninsulated wire. is the new coil wrong or is there a diferent way to hook it up. thanks any input is very much appericiated. thanks, jonathan

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Mike M

01-15-2007 10:34:01




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 Re: john deere b in reply to joanthan s, 01-15-2007 09:31:34  
Sounds like your old coil was for an XB dist. and the new coil for a magneto. Need to know if you have a dist. or mag.



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tader

01-15-2007 10:38:56




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 Re: john deere b in reply to Mike M, 01-15-2007 10:34:01  
a 1950 jd b is dist.



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B-maniac

01-15-2007 18:47:34




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 Re: john deere b in reply to tader, 01-15-2007 10:38:56  
Hey tader , they came with either one. The mag was an option , dist standard. Just thought you might want to know. (1950 B)



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tader

01-15-2007 19:47:29




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 Re: john deere b in reply to B-maniac, 01-15-2007 18:47:34  
whatever u say



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tader

01-15-2007 10:31:01




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 Re: john deere b in reply to joanthan s, 01-15-2007 09:31:34  
hey jonothan i also have a 1950 b and had problems withthe ignition. try and post a couple of pics and ill see if i can help



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Glen in TX

01-15-2007 18:59:48




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 Re: john deere b in reply to tader, 01-15-2007 10:31:01  
tader, Do you have a Wico XB dist or Delco dist or a Wico magneto ? I put a pic of the Wico XB on Jonathans post on JD board.



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tader

01-15-2007 19:43:17




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 Re: john deere b in reply to Glen in TX, 01-15-2007 18:59:48  
mine is a delco



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Glen in TX

01-15-2007 20:38:40




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 Re: john deere b in reply to tader, 01-15-2007 19:43:17  
Ok the coil wiring I posted below would apply to yours. What kind of problems? Some have trouble getting the right condenser for their Delcos or have the wrong coil or not using a ballast resitor when they should be. You can put one of the Pertronix electronic ignitions in it too.



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tader

01-16-2007 16:53:20




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 Re: john deere b in reply to Glen in TX, 01-15-2007 20:38:40  
naw we fixed it a long time ago iwas just tellin him i had problems mine just had 50 years worth of riggin and needed to be rewired. thannks any way



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Glen in TX

01-15-2007 10:30:10




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 Re: john deere b in reply to joanthan s, 01-15-2007 09:31:34  
Jonathan, Hoped someone had answered you by now on JD board. Send me a email and I'll be glad to send some wiring diagrams for the B to help you out. It's going to depend on what distributor you have there a Wico XB or Delco and if you have it on 6V still or 12V and negative or positive ground. That B should originally be 6V positive ground. It just sounds like wiring isn't right and something has been changed from your description. Originally should have been a black wire from ignition switch to the Wico XB if on 6V positive ground setup. If a Delco and 6V + grd. same thing black wire to - neg. side of coil and black wire from + pos. side of coil to distributor. If you have battery set up on negative ground 12V or 6V for some reason being converted you would need to run ignition wire to + pos. side of coil and - neg. side of coil to distributor. Email and will send diagrams to make it clear for you if my power isn't out again later.

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