Connect a wire from pin 5 to a constant 12 or 24 volt source. 1 here shows the back of a typical gauge.

Amazon Com Veethree Tachometer 52mm Electronic 0 4000 Rpm
Veethree tachometer wiring diagram. Replacement massey ferguson tachometer tractor meter 020938 899 423 m91 8900. Follow this wire to a junction and attach the wire from pin 4 at this junction ie. Connect wire from the s terminal to the negative side of the ignition coil or to the terminal marked tach on solid state ignition systems see figure 2 found in this document under. To change the ppr on tachs with three buttons follow the steps below. Veethree electronics 2050 47th terrace east bradenton florida 34203 usa. Apply power to the tach by turning the ignition key to the accessory or on position.
This article on how to wire an electronic tachometer doesnt have anything to do with project x other than that 57 is the granddaddy to super chevys chevelle. Beginning with the tachometer fig. Veethree gps five and six gauge instructions. The pointer will move to a. Make sure this switch is set to the number of cylinders for your engine. Veethree offers highly accurate electronic gauges for a wide range of industry applications.
12v battery coil ignition coil tach base can be mounted in either direction for convenient mounting. Replacement massey ferguson tachometer tractor meter 020912 1674 637 m91. Most vendors will use one tachometer head to cover a variety of engines. A switched 12 or 24 volt wire can be found coming from the ignition switch. The wiring diagram shown is a typical installation. Wiring connect the tachometer wires as shown.
The tachometer is configured at the factory for 4 ppr. Veethree 5 in 1gauge installation instruction new. White red black green grommet. Veethree electronics 2050 47th terrace east bradenton florida 34203 usa. With no power applied to the tach press and hold the set button. Do not start the engine.
Connect the wire from pin 4 to a switched 12 volt or 24 volt source. For chrysler blue gold and silver boxes ford standard electronic ignitions and most other oem standard cd and electronic ignitions. At the top left of the diagram we see the cylinder selector switch. Refer to diagram d.