I installed a new shift indicator in a '74 C10. It's mounted over the steering column at the bottom center of the dash behind the clear lens there. Afterwards I looked and looked for someplace to put a bulb or some kind of lighting. I do not have the printed circuit any longer as I have all individual gauges now. I suspect there may have been a bulb socket in the printed circuit near the indicator. Is there a socket for the indicator in the printed circuit? I do have one of those fiber optic little things with a bulb holder on one end. Where does that thing get it's power and how can I test it if it's what I need or can use to light up the indicator? Or if anyone has their indicator light still working, how is it lit? Where can I find a diagram? I could rig something up, I have plenty of mini lights. But if there is some stock way to light the indicator up I'd rather do that.