2pot

iTrader: (3)

I know this has been done before. I think zen and jolly green monster; there must be others.
How do you wire an msd dis-4 plus into 93-96 Impreza - with an external ignitor and coil on plug ignition system.
I tried emailing msd the 93-96 wiring diagram, but I'm not sure they quiet understand; but I could be me!
Msd goes between ignitor and coil packs.
4 trigger wires from ignitor to msd
2 wires to coil packs - one positive, and on 12v switched.
Bolt on coil pack grounds coil pack to head.
BUT, what about the 4 coil negative wires from the msd.
Have a look at this thread

http://www.msdignition.com/forum/showthread.php?t=17527

Has using msd allowed a larger plug gap?

Any help gratefully received!