I'll do some work on it on my day off, it'll start, approach it next day, and it is back to being a useless lump on my lawn.

Issues:
* Dome light is on whenever the car happens to be on
* air conditioning used to only work on high, now doesn't work at all
* shows security and battery lights when I attempt to start
* Most importantly, the car will not turn the engine over. I can hear that it has sent the signal to do so, but it simply won't. Whenever it does start, it is always a hard start.

Tonight I'm going to try resetting the passlock, for the third time, then disconnect the battery for a few hours and see what happens.

Anyone else have any other ideas? Also, does anyone happen to have wiring diagrams for the air conditioning system and around the BCM? (I ask because twice during the repairs I've cleaned up the wires and the symptoms that tend to relate to the BCM change, which makes me think some wire testing is in order.)