Im having troubles getting my alternator to charge. I replaced the one that was in it with a new delco #7127, still nothing. The gauge reads about 10 volts, and then when I give it a rev, the voltage drops. I replaced the gauge, same result. I have compared my wiring with the diagram off of liquidaddiction.net and they are almost identical. The one difference is that I removed my ballast resistor(when I removed my points distributor for an HEI)IS this my problem? Also, the Motorola unit that came off the boat was a two wire unit, the new one is a three wire. I read that the third wire can be used for an idiot light, is this correct? Someone please help!