Guages

[busterwivell]

Now that my tach works, I've got to question it's accuracy. It says I'm idling at 1200, I don't think so. It says 3700 RPM at 55 MPH. Seems a little high. I have a 1 Ton, with 402, 4 speed (Granny Gear first), 30.5 inch tall tires, and a rear end with 14 bolts in it. Anybody know how to check tach accuracy, and if what it says is right, isn't that an EXTREMELY high gear ratio? Is that why I run hot above 65 MPH?

You guys are makin' me work on my truck too much. Tonight I installed the 2 in line 4 amp fuses with new holders, and , DAMN, the 'BATTERY' gauge now works. I suppose next you'll tell me to hook up the green wire to the temp sender and the temp guage will work.