6V to 12V Distributor coil replacement ?

Now, howsomever, with the manufacturing of a frontmount 12 volt coil, some current control is still needed to prevent the coil or points from burning out. Which is what the OEM ballast resistor was doing to the OEM 6 volt coil.

There should have been an instruction sheet with your new 12 volt frontmount coil, telling your what size resistance is needed to prevent your coil from burning out. You may have been lucky and just have burned out your coil contactor. But you still need that resistor, find your installation sheet and do it right..... ..Dell

If you got the general purpose, one size fits all, sidemount coil from Ford, then indeed the coil does need a voltage converting resistor to work with 12 volts but does not need a resistor to work with 6 volts.

And NO, there is not a "built-in" resistor in any ignition coil. Yes, there is resistance in the form of coil wire resistance but to purposely add additional internal resistance is blattent nonsense.

All electrical conductors (wires) must have, by laws of physics, resistance to the flow of electrons. Copper has less resistance that iron for example and plastic or glass have a whole lot of resistance to electrons therefore they are called "insolators".

Chris..... .There is a lot of electrial mis-information out there. You might want to check the "archives" at the top of the N-Board for the straight skinney..... Dell