After reading about charging system failures I decided to install a volt gauge. I opted for a $3 digital unit off flea bay, I should have bought 3 to find one that had all the bars in the LED display. It's missing the horizontal bar in the middle on the right digit. I used an exacto knife heated by a hand held torch to cut the hole. Flushed the face of the gauge with the dash and held it with tape then glued it in with 5 minute epoxy from the rear.