The stock Coil for a Farmall is a 6 volt coil and the use of a resistor is used from the factory , on late model 706-806 the ceramic resistor was replaced with a resistor wire . A hot shot wire as i cll it was run from the R terminal on the solenoid to bypass the resistor to give a shot of 12 volts for fast start and hot spark. Now i am not and electrical engineer and maybe my way of doing something are shell we say barnyard engineering i try and follow the book with a few teaks here and there like i do away with the fuse and use self resetting curcit brakers add in C/V relays to take the load off the head light switch when someone want to add more lights then came from the factory since you pushing the factory switch to the max at five lights . I cringe at some of gen to alt. change overs that i have seen , Like running a 65 amp alt thru a 12 ga. wire and like the Farmer wire job that was hacked up on this 460 i am working on at this time . How these guys can sleep at night with something like this setting in a barn full of hay and fifty or so cows down below is unbelievable .
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