VDO produces automotive gauges, including tachometers. These tachometers are reasonably priced. VDO tachometers offer the driver gains, in terms of power and performance, from the engine without revving up the RPMs or damaging the engine. The tachometer can be mounted in the car's dashboard and connected to the 12-volt battery and the ignition switch in the car.
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Things you need
- Tape measure
- 16-gauge stranded wire
Disconnect the negative, positive and ground wires from the car's battery terminals with a wrench.
Mark the centre of the circle where the tachometer will be mounted. The tachometer will have a cardboard template that will make marking the centre and diameter of the circle easy.
Cut a circle with a 3 1/8-inch diameter using the mark as the centre of the diameter.
Push the tachometer into the hole.
Place the VDO Spin-Lok mounting clamp onto the back of the tachometer.
Tighten the VDO Spin-Lok mounting clamp around the tachometer. The tachometer should not rotate.
Attach the power source wire already installed on the back of the tachometer to the positive terminal of a 12-volt power source.
Connect the light source wire already installed on the back of the tachometer to the car's light switch terminal.
Attach the ground wire already installed on the back of the tachometer to the grounded terminal on the battery.
Connect the ignition signal wire already installed on the back of the tachometer to the car's ignition signal source. This may be the alternator or ignition coil.
Reconnect the positive and negative wires to the car's battery.
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