I have a msd blaster 3 coil on my car and it is shooting a spark out the negetive side of the tower and arching to the negetive post on the coil. i just put in a new msd 6al box because the old one died. it started doing this after i put the new box in didnt do it before with the old box. i wired everything up correct. my battery is in my trunk and i have it grounded to the block and the heads are grounded to. im using FMS 9mm plug wires and autolite 3924 plugs. also replace cap,rotor and magnetic pickup in dizzy. if anybody knows whats wrong i would apreciate some advise. thanks dan