Re: 12 volt coil?

Posted by Janicholson on June 30, 2005 at 10:12:55 from (199.17.6.77):

In Reply to: 12 volt coil? posted by Nebraska Cowman on June 30, 2005 at 07:17:18:

From the shape I'd say it is IH for sure (you probably know that). It is black and shows no red so I'd also say it is not off of a letter series, nor a early number series. Check with the parts department to see if there were resistors on later model tractors. Some equipment, Ford cars for instance, use a resistor wire that goes from the switch to the coil. And a bypass wire from the solenoid to give the coil full volts with the starter in the circuit. If the coil has the same Ohms of resistance as a six volt coil (or within an ohm of it) it is a 12 v with resistor required. If the resistance is almost twice the Ohms of a six volt, it is probably a "non-resistor" type. I gave no Ohm specs because ohm meters don"t always talk alike at low ohms unless they are too expensive.
Good luck, Jim Nicholson

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