9N terminal block resistor

[milkmanNC]

I have began the task of re-wiring my 9N front dist. 12V.

While removing the hack job wiring someone in the past did, I removed the small nuts that hold the terminal block resister in place. The porcilin resistor on the terminal block broke.

Do I need this in place even though I have an in-line resistor between my coil and ammeter?

The previous wiring guru didn"t wire anything to the terminal block and the tractor ran pretty darn good....

Thanks for any advice!!

 

[BillM (OH)]

I would guess you want somewhere close to 4 ohms total resistance (counting the coil resistance) to keep your current to the coil somewhat below 4 amps to keep it from melting down. Ballast resistor when hot should count as well - OK to have more amps (less resistance) for startup ease as long as the total after starting is correct.

 

[Dell (WA)]

milkman.......ALL squarecan frontmount distributor coils NEED the "infamous ballast resistor". DON'T ARGUE. Many 12v conversions also use a 12-to-6v converting resistor in series like flashlite batterys. Others use the modern 12v squarecan ignition coil which also NEEDS "infamous ballast resistor". Understand??? ......Dell, a 12v advocate for the right reason

 

[milkmanNC]

Dell,
Since I want to do this wiring corectly, I will not argue and I will order this said part from this great site.
I respect your wisedom of sparkie's...

Thanks

 

[Anonymous-0]

9n oem coil runs on 4 volts, running. not 6