QUOTE(underthetire @ Jan 27 2009, 12:19 PM)
I had no idea there were lights on the dash sliders. Something else to fix now!
The Blue light is standard from the factory. I added the bulb for the red light. I don't think the factory ever wired the car to illuminate the red box as there is no wiring for it, but there is a hole in the back for a bulb.
I used a clear LED in the red box (and installed one in the blue), I took the 12V form the blue side to the red side and hooked the other side of the red to the heater lever.
The fans are old and we don't need to run them while we are on the freeway so I thought it would be cool to have the light so I'd remember to turn off the fan when the engine is at speed.