I was going to eliminate the wires I'm not using the blue positive coil wire was gonna be one of them, I'm not running a ballast resistor being that I have a msd box. If I can use that wire as a key on ignition for the msd and voltage regulator then I'll use it. If not what wire would you suggest to use? I've had this msd box wired up to a different vehicle I understand how it goes, just not familiar with the a body wiring and what would be a good key on ignition source to use.