Tachometer Signal Filter

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  • One Year Limited Warranty

    One Year
    Limited Warranty


A tachometer filter transforms poor, weak or disordered pulse signals and corrects them by stripping out leading or trailing pulse signal interference. This interference often confuses aftermarket instruments including tachometer RPM gauges and causes them to act defective or erratic. After the signal has been filtered and rectified, it is then conditioned before it exits the end of the filter circuit to the new output.

Digital Signal Filtering

A multitude of other applications may exist where an RPM signal needs to be corrected before it is fed to an aftermarket instrument. The tachometer filter should be used when installing a GlowShift Tach Gauge, Digital Tachometers with Shift Light or a Programmable Barrel Shift Light device. If you experience issues or inaccuracies with your instruments, this is more than likely the solution you have been looking for.

Tachometer Signal Filter

A tach filter may be necessary when any device utilizes a vehicle’s engine RPM pulse signal that is of less than optimal quality for instrument analysis. Such systems include, but are not limited to the following:

  • Single Coil Ignition Systems
  • Point Style Coil Ignition Systems
  • Historic Vehicles with Vintage Electrical Systems & Components
  • Vehicles with Weak, Strained or Stressed Electrical Systems
    • Note: Tachometer Signal Filters only work with GlowShift Gauges and are not guaranteed to work with other applications.

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      • Tachometer Signal Filter
      • Designed for Cars and Trucks
      • Transform Faulty Pulse Signals
      • Required for GlowShift Tachometers
      • Installation Instructions
      • Free Lifetime Tech Support
      • One Year Limited Warranty
Tech Specs
Gauge Type: Tachometer

Includes an installation guide which is available online and included with your order. You can also visit our library of installation videos which include complete step-by-step tutorials and useful tips on how to install a wide range of GlowShift products.

Download and Print the PDF PDF Instructions View Our Help Center Help Center