How to Wire a Hawk Tachometer
A tachometer is a gauge in your vehicle that reports the number of revolutions per minute, or RPMs, made by the crankshaft. This information is used by the driver to determine how much torque the engine is generating, when it is safe to shift in a manual gearbox and the upper RPM limit at which the engine may be run before incurring damage. The Hawk tachometer is an aftermarket gauge used on engines that have been modified to run at higher RPMs than the original tachometer was calibrated for.
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Instructions
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1
Measure, cut and strip the long white wire from the tachometer sending unit and connect it to the left post of the tachometer. Cut and strip the yellow wire to run between the unit and tachometer.
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2
Connect the yellow wire to the right post of the tachometer. Find the post on the tachometer sending unit with a number that corresponds to how many cylinders your engine has and connect the opposite end of the yellow wire to that post.
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3
Connect the black wire on the tachometer sending unit to a grounded point on the frame. Connect the green wire to the terminal block mounted near the dashboard support. This should be around the ignition switch.
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4
Connect the pink resistor wire to the positive terminal on the ignition coil. Connect the red wire from the tachometer sending unit to the IGN terminal on the ignition switch.
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5
Start the engine and note the idle speed. If the engine idle is indicated correctly then the installation is successful. If not, kill the engine, check all the connections, and start the engine again.
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