K, well, i spent about 3 hours troubleshooting this today, and it still isn't working. I pulled the sled out of the dash, got a 10K resistor and jimmy rigged it in the iso plug between the ign. sense and the mute wire connectors, just to see if it would work. It seemed to work but to be inverted... it would mute when a call ended and unmute when one began. So i switched the setting on the empeg in emplode to mute on 0V instead of 12V and went and tried again. Nope. It just started acting completely random. Sometimes it would mute and sometimes it wouldn't and never when it was supposed to.

I've tried everything i can think of. Anyone have anymore ideas?