(1) blue/yellow wire in the ECU pentastar connector (2) to/thru ballast to coil positive primary terminal (ign1 "run"). (3) 2 wire circuit from dist pickup to ECU (the zigzag connector circuit). (1) and (2) need fire in "run" and the ballast is bypassed in "crank". pull the yellow wire off of the starter relay to disable the starter and hold the coil secondary wire (dist end) 1/4" from a ground & seperate the zigzag pickup connector and drag the male terminal on the body half of the zigzag connector across the intake manifold to make/break that circuit & see if the coil wire sparks when your helper has the key "on" and holds it to "start". If good there you have fire!. set dampener slit to 15 BTDC/line up magnet with reluctor tooth plus the rest of your prebreakin checks/caveats