Msd Digital 6AL

67 gt said
I have nothing else hooked up to the coil besides the orange + black- wires. I’ve tried another coil and no spark , waiting on my brother to arrive back home and will try his as I know it works , will let you know how it goes . Funny thing when I had the 318 in it’s place I had a cheap HEI $75 dollar unit with a Bosch coil ran for 4 years and sold it with the engine about 6 months ago. Msd package with new build $996 1year . No I got rid of all my old gear when I sold the 318.On my sniper screen it’s giving me the rpm signal when cranking so it’s getting power but not to coil.

I am not sure if this has anything to do with what you are experiencing, but I had a lot of problems with my MSD box at one time. Intermittent. Sometimes it would run and work flawlessly and other times it would not do anything. I thought it was grounded well. Anyway, I ended up running a ground wire from one of the mounting holes on the MSD box to the ground on the battery post. It has worked flawlessly ever since. It's been two years now with no problems at all.