Remove the instrument panel cover. Remove the tachometer retaining screws. Remove the tachometer cable from the back of the tachometer. Reverse the process to install the new tachometer.
you need a tachometer
The Mazda tachometer and the speedometer have separate cables. The tachometer cable probably does not work properly. Change the tachometer cable.
The tachometer cable may be faulty. The tachometer sensor, on the side of the engine might not be functioning properly.
You can perhaps buy a used portable tachometer by going on to www.amazon.com
Here's a site where you can buy a handheld tachometer: http://www.checkline.com/tachometers/
you dont need to cause it has a factory tachometer
A tachometer and an auto-meter is an instrument measuring the rotation speed of a car or a motor. An auto-meter is more accurate and reliable than a tachometer.
Tachometer is formed from the two Greek words: tachos 'speed' and metreo 'to measure'.
a tachometer, wire and wire terminals
There is no such animal as a "tachometer sending unit." The tachometer circuit is spliced into the ignition circuit and reads the actual ignition signal used by the ignition module.
The inventor is unknown for a tachometer. However, the first documented use of a tachometer device was by the German engineer Dietrich Uhlhorn in 1817. He is credited with its first use, but not necessary as being its inventor.