[Ford-ferguson] 12 volt conversion

[Bo Hinch]

Don`t want to start a long winded conversation about COILS and Resistors 
, but , if the coil doesn`t have a BUILT in resistor ,and some doesn`t , 
then you need to use a EXTERNAL resistor . As for my personal preferance 
, I would use a EXTERNAL resistor and a early style FORD 12 volt starter 
solenoid . On the solenoid , you will have two SMALL studs , one being 
marked with " S " meaning that is the one to hook up to the starter 
pushbutton or the start terminal on the ign. switch and the other will 
be marked " I " which needs to be hooked up at the battery side of the 
coil , therby , bypassing the resistor when the tractor is started . In 
other words , when you start the engine , you monentarly BYPASS the 
resistor for the FULL 12 volts to give you that extra boost , and as 
soon as your engine starts and you take your finger off the starter 
button , the solenoid returns to its nutural position , and now you are 
running the engine THROUGH the resistor with the proper voltage drop .   
P S , there is a company making a 12 volt coil for the front mounted 
dist . and it is kind of pricey .
Hope this helps some .
Bo Hinch

Dave Mayfield wrote:

>David, if you use a 12 volt coil you do not need the dropping resistor.
>
>
>    Dave Mayfield
>Ham Radio Operator
>  Tractor Collector
>  www.w9wrl.com
>----- Original Message -----
>From: "david kirk" <dnakirk at hotmail.com>
>To: <ford-ferguson at lists.antique-tractor.com>
>Sent: Wednesday, January 26, 2005 9:52 AM
>Subject: [Ford-ferguson] 12 volt conversion
>
>
>  
>
>>Just recieved a '49 8N and have trying to decipher the wiring.  It has
>>    
>>
>been
>  
>
>>converted to 12V with alternator.  I have been looking at 12 volt
>>    
>>
>conversion
>  
>
>>wiring diagragms and it looks like if you use a 6V coil you have to place
>>    
>>
>a
>  
>
>>resistor between coil and battery.  Just want to confirm that if i use a
>>    
>>
>12V
>  
>
>>coil that i do not need this resistor.  Any explanations would be
>>appreciated
>>
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