Stuart,
Thanks for the input. I guess it's obvious that I'm not a mechanic. The guage I was referring to is the ammeter, the guage inside the truck. On Sat., as I mentioned, for the first 30 miles, the needle was pegged completely to the right. Then for 3-5 miles, the needle was just to the left of the last mark on the rightside of the guage. The needle was not bouncing around. When I first left the house, I noticed the needle ( when I was pushing on the accelerator) was pegged to the right. But, when the truck was idling, at a stop sign, the needle was in the center of the guage. Push down on the accelerator and the needle goes all the way to the right. The voltage regulator is external and new. The starter, solenoid and alternator are also new. Less than 500 miles on them. Also, the starter, solenoid, alternator and battery went into the truck w/o replacing the voltage regulator. Then I noticed the ammeter needle was pegged to the right. The mechanic put a voltmeter on the battery and it showed 18 volts. So, the external voltage regulator was replaced. Truck was OK for awhile. Then one morning, click, click, click. Back to the shop. They put in the second new battery, and I had no problems for about 3-4 months. Then this weekend.
