[ryanheacox]

How hot does the ballast resistor get? I imagine you just have a failing coil. Is it an original?



Here's a little explanation on the 6/12v coil resistances. While a 1.5 ohm coil at 6v will draw as much current as a 3 ohm coil at 12v (4A) the 12v coil will be using 48W of power split between the coil and ballast while the 6V will only be using 24W. By contrast if you didn't use a ballast resistor on a 1.5 ohm coil you'd be drawing 8A and 96W of power! That coil would burn up quickly.