Here's an interesting bit of old truck mystery..
The other day, I was having a hard time getting my truck to start.. and I noticed that turning the key to the "on" position didn't make the gas gauge needle rise.
I turned the heater blower switch on, and nothing.. then I tapped the instrument gauge with my finger.. tap tap.. and the blower kicked on, and the gauges all rose!
I hit the foot start and VROOM off she went!
So now when I get in the truck, I hit the blower switch.. if the blower dosent run, then I tap the instrument gauge glass twice.. tap tap.. and the blower kicks on, then I fire it up.
My guess is I have a bad/loose contact on the back of the gauge cluster, but it sure is a cool "Fonzie" way to start the truck!