When the key is switched on, the indicator light on the dash does not come on. When I put 12 volts to the blue lead on the alternator plug, the light comes on. I know that much works and the voltage regulator and the alternator are new. The battery is not charging. As I understand it, my guess is the green lead going to the back of the indicator light is not powering up. Any clues where I might find the source of this trouble? Any ideas would be much appreciated.