3 3/4" Tachometer Engine Cylinder Adjustments Installation

This tachometer is factory calibrated for 8 cylinder engines. For operation on 4 or 6 cylinder engines, a switch adjustment must be made.
1. Remove cup by placing the tachometer face down on a smooth surface. Remove the phillips screw on the back and gently lift the cup off to expose the circuit board. Take care
not to pull on the wires.
2. Locate the switch on the circuit board. Move each of the two switches to the proper cylinder selection according to the diagram illustration on the right.
4 Cyl.- Both switches down
6 Cyl.- Switch #1 down. Switch #2 up
8 Cyl.- Both switches up
3.Replace the case on the tach with mounting bracket at the bottom (make sure the wires are clear of the screw hole).
4. Replace the screw

To operate the Auto gage Shift-Lite tachometer, first determine your engine's shift point for max. horsepower (for example, 3400 rpm). Turn on the power to the tach. Set the desired RPM by turning the adjust knob on the back of the tach, the pointer will move. Stop when it reaches the desired shift point. Turn the power off. The tach will now use the selected shift point, until set differently. When the tachometer reaches your set point, the red shift light will come on. It will stay on until the engine speed drops below the set point.
* Note: If the engine is running, the shift point can't be set.
* Note: The shift point setting can be checked anytime the vehicle is started. Turn the ignition on and the shift point setting will show on the dial.

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