does anyone notice that when in dyno mode, the battery voltage tends to fluctuate when at idle and then when off idle? Just put in a brand new alternator and never really paid attention to the voltage readings. At idle with a couple accessories on (headlights, a/c, rear defogger) it will read anywhere from 13.2-13.5 volts. While driving, it will increase to 13.8-14.1 volts