hey guys. so i've got a 94 vx with a brand spankin new duralast gold battery. i was cleaning out my tahoe the other day and found my cig lighter voltage gauge. i know its not super accurate for getting voltage loss from a system hitting hard but its nice to know since there isn't a gauge in the dash.
plugged it in and i've been noticing that under 50mph, it seems like nothing is charging. it sits at 12.5v. as soon as i pass 50mph it shoots up to 14.3v and stays there until i go back under 50. i feel like if the alternator was bad, it just wouldn't charge at all. none of this on and off non
