Possible MSD 6AL failure

The 6AL is mounted on the driver side fender, away from the block. The coil? Good question, I'll have to check that.

Thanks for the pointers, I'm all for being self sufficient. I'll look into those suggestions.

Fortunately, MSD had something I can use to check the ignition. Mine's magnetic, the white wire is attached to a kill switch. Come to think of it, the problem pretty much acts like the kill switch is on.

http://www.msdignition.com/page.aspx?id=3206

As far as the hot/cold, I would've considered heat being the issue with the 1st occurrence. However, last night I started the car after it had sat outside for a few hours, so no chance that the car or MSD was hot. It's a bit of an intermittent issue, making it more frustrating to debug.