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Harry Ferguson Tractors Discussion Forum
Show Parts for Model:

Re: bad 12 volt conversion

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Jason S.

05-10-2013 05:59:05
204.54.36.245



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That piece you are reffering to is a ballast resistor. It cuts the voltage down going to the coil so it doesn't over heat. Most 12 volt conversions have that because they do not have a true 12 volt coil installed. If your tractor was converted with a GM 1 wire alternator and most of them are, the voltage regulator is contained in the back of the alternator itself. I have seen them short internally and drain the batteries. Get the alternator checked and if it isn't there then it is a wiring issue or a switch that has gone bad internally. Your meter going crazy is normal if the tractor has non resistor spark plugs installed and the meter is digital. Does your tractor have an amp gauge? Does it show discharge while the tractor is sitting still and not running?

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Jec

05-10-2013 09:45:47
147.97.17.165



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 Re: bad 12 volt conversion in reply to Jason S., 05-10-2013 05:59:05  
Anyone have any idea what the wire is that comes from the ballast resistor and splices into the kill switch and then heads in the direction of the alternator? It's broke and I don't know where this one is supposed to connect.



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