What happens if you put your player in standby, then turn the ignition off? Does it stay in standby or go completely off?

Just tried this... putting the player in standby, then turning the ignition off. The player's flashing led goes out, I guess this is completely off. There was no thump, this is because the amp line is already turned off from the standby, right?

Just some ideas:
Could this be caused by intermittent/bad wires on the sled? I got my empeg around the time other people reported wires coming off.
Could it be related to a certain make? I have a 99 Chevy Tahoe. Dearing & peterk, is your empeg also installed in a GM?
I just remembered I did have a speaker thump maybe once or twice the whole year I was running 1.03, I have no idea if this means anything.
I do have an aftermarket alarm installed.

Tom