Tachometer FAQs

• What do I need to connect my Tachometer to?

  You need to connect the tachometer to the vehicle's ignition system.

• How do I connect a Tachometer to a GM LS1-LS7 engine’s ECU?

  Please view the diagram below for more information on how to connect a Speedhut Tachometer to an LS ECU. Setup the Tachometer to run 2 pulses per rev when connecting it to the engines' ECU.