From Autosport Labs

Jump to: navigation, search


Tachometer Adapter

This small board adapts a Tachometer to up to 4 individual coil packs, capable of handling 4, 6 or 8 cylinder wasted spark applications.

Available for purchase in our Online Store

TachAdapter small.jpg



  • Connect Coil 1,2,3 and 4 to the drive signals to each coil packs as necessary.
    • We recommend 24 gauge wire, but wire gauge is not critical- so long as it fits the module.
  • Connect the tach output to the input of your tachometer.
  • Seal the module with shrink tubing or electrical tape- the board is small enough to integrate into your wire harness / bundle.

Example Wiring

TachAdapter wired small.jpg

Example wiring for a 4 cylinder wasted spark application: yellow wire connects to Tachometer input; red and black wire connect to the drive signals for the coil packs.


Tach adapter sch.png
Personal tools