I have an Accel points eliminator with an 8140C coil. Based on my instructions, this configuration does not use a Ballast resistor, because the 8140 & 8140C have a 1.4 Ohm internal resistance. I wired it up and it seems to work/run fine. My only concern is the coil is warm to the touch, bordering on hot. How hot is too hot? Randal