Hope this is the right section to post this in, if not please move it. I have a 97.5 Regal GS with automatic climate control. The problem I am having isn't the typical problem these have. The display works fine and all functions work correctly. The problem I am having is that none of the buttons illuminate at night, when the headlamps come on. I have two sets of climate controls and both react the exact same way. I have tested the bulbs for continuity and it seems that the circuit and bulbs are fine. Does anyone possibly have the pin-outs or schematics for the wiring going into this unit? I am trying to find which wire is feeding the unit with power for the illumination. From testing the board itself, I have narrowed it down to 3 wires in the circuit, but it helps to know which one I should be testing. Thanks in advance for your help. You guys are always very helpful!