I have a '64 K10 'Burb, with a 350. I only drive it about once a week. 2 months ago it wouldn't turnover. I jump started it. 2 weeks ago I had a new battery, starter and alternator put in. I had the work done, because it was too cold to do outside. Then, when I was driving the truck, I noticed the gauge that shows discharge or charge was maxed out to the charge side when I was driving. Also the clock on the CD player would be out when driving, but on when idling. When the mechanic put his machine (?) on the battery, it showed 18 volts, so they installed a new voltage regulator. Drove it one time, it was fine. Yesterday, turned the key nothing. Jump started it. Drove it again for about 10 minutes. Gauge maxed out to charge side and clock on CD player not ilumunated. Went to Carquest, guy checked battery said charge was way down, but only 13 volts getting to battery. Awhile back, I cut the antenna wire that goes to the antenna so that I could replace the broken antenna. But, I did not plug the new antenna into the CD player. Could that have anything to do with my problem, or is somethingelse going on? I asked the mechanic at work ( before getting the new voltage regulator) if driving the truck with a bad voltage regulator would have done any harm? He said probably not.