Beer is always good. Maybe we can convince Matt to organise another meet.

Unfortunely the blitzsafe adapter is priced at $98.95 from rcainput and everywhere else is seems, and as I'm buying two I went with the PIE for $69. Based on the description & pictures it appears to be the same thing.
I'll know more tomorrow when it arrives, and I'll test it with a walkman or some other sound source. Fingers crossed.

I'll print out your option two, and sit out in the car with the sled and stare at all the wires, maybe then I'll figure out how it is you did it.
While I'd really prefer to do option one, I've been unable to source the into radio Metra/Scosche wiring harness, hmmmm maybe a trip to the junkyard is in order....