Hey guys... I just bought ignition coil MSD BLASTER SS for my 95 Prelude H23A1. I tryed to istalled it but having issues.. So Im goin to use the original harness power... I went check the wiring and the BLACK YELLOW is positive BLUE is ground But the YELLOW is has no power.. But when I use the battery and connect my multimeter using the positive post I get power.. I thought it was the ignition but when I crank it I get no power. I knw it goes to the distributor cap. Can anyone help or tell what that wire is for?? Thanks in advance.