Yeah, there should have been a temp sensor on the front pillar near the radiator somewhere, likely... I ended up scavenging a usable part but it's not ideal; it's a few degrees off.
I really need to do a writeup on the process with some pictures to go along with, I'll try to tackle that in the next few days... but suffice it to say I removed the lights from the computer, bypassed the crazy "logic circuit" that was apparently controlling them, disabled the click switches and added one that controlled them all for simplicity, and then wired in the dash knob and door ajar as well.
Good luck, I'm happy with it!