If the recommended voltage to the FBO coil is 10-11v, how can we get this kind of voltage thru the aftermarket ballasts?
Can anyone that is running an actual FBO ballast confirm what your coil voltage is when the key in "on" & when the car is idling? (I blew up my actual FBO ballast so I can not test this, but I think that I remember mine showing 6+ volts when the key was at the "on" position.

I am in the same seat as gator. I have tested the 4 prong resistor to get 3.5v or 5.2v (pending on which side was tested) volts to the coil with key at the "on" position. I have tested the NAPA 1.25ohm resistor that gave me 5.3v at the "on" position, and now I have the MP 1/4 ohm ballast that gives me 6+ v at the "on" position and 8.5v to the coil with the engine idling.
Once again, can we get 10-11 volts at the FBO coil with the aftermarket ballasts? Do we need 10-11v at the coil?
BUMP




1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)