Ok, I fixed my MM. It needed a battery. :rolleyes:
I set it to DCV 20 and tested the battery. 12.85 volts. I started the engine, 11.68 volts. I turned on the headlights, high beam, a/c, and radio, 11.15 volts. Battery light stayed on. I revved up the engine, 11.88 volts, battery light went off...