ign help

[Justins72]

i have a mopar performance chrome ecu and a msd blaster 2 coil and i noticed that the plug has 5 holes but the box only has four? also i have the four connector ballast do i have to change that to the other one or will that one work just fine? i want to go start the car but i want to make sure everything is right before i start it  thanks

[ShelbyDogg]

That 5th pin was for a cold start retard or something eliminated 20 years ago.  The new ignitions don't even need that 4 pin ballast resistor anymore.  If you look at the wiring for the electronic ignition kit, the 5 ohm side of the resistor doesn't go anywhere.  You should use the 2-pin ballast resistor that came with your coil and plug the 2 connectors in with the DrkBlue and Brown wires.
Rob