Shift Light Diagram

This article offers detailed wiring diagrams for shift light installations, helping you set up accurate RPM-based indicators for optimal shifting. Whether you’re using a standalone shift light or integrating it with your ECU, these diagrams provide step-by-step guidance to ensure a seamless and reliable installation.

shift light diagram

Wiring

  • Red – 12V Switched
  • Black or Yellow – ECU Output
    • PWM Out – Ground Trigger
    • Hi-Current  – Ground Trigger
    • Injector – Ground Trigger
  • Note: Some wiring is not polarized and will come with two black wires, so it does not matter which wire goes to 12V Switched Power