Well, I haven't cut any wires, or removed any that wasn't necessary to remove the dash. i unplugged everything like the heater, gauge cluster, fuel/volt.
I plugged the light switch back in to try and test the wires, but now the courtesy lights don't come on. The headlights do, but no courtesy. i reattached the black ground under the dash, but still no courtesy. Does something else need to be connected to get my courtesy light circuit closed?
Also, to test those three wires (black, gray, yellow) that are coming out of the harness to see if they are the stereo wires (hot, switched hot, and ground), does the key have to be in the ignition, or is just having the battery hooked up enough to test the wires? is this clear to anyone?