Why are my GlowShift wideband air/fuel ratio gauge and pressure gauge not turning on?Updated an hour ago

If your GlowShift wideband air/fuel ratio gauge and pressure gauge are not powering on, check the power and ground connections for both gauges. Verify that all wiring is connected securely and that the fuses in the power harness are intact. Also, confirm that the constant 12V and switched 12V ignition connections are wired to the appropriate power sources.

Check the harness pinout to ensure the wires are in the correct positions:

• Wideband Gauge:

  • Pin 1: Black

  • Pin 2: Red

  • Pin 3: Orange

  • Pin 4: Yellow

• Pressure Gauge:

  • Pin 1: Red

  • Pin 2: Black

  • Pin 3: Orange

  • Pin 4: Yellow

Additional troubleshooting steps:

• Verify that the harness wires are in the correct pin positions before reconnecting power.

• Swap the wiring harnesses between the wideband and oil pressure gauges to determine whether the issue follows the harness or remains with the gauge.

• Recheck all power, ground, and fuse connections.

If the gauges still do not turn on after these checks, please Contact Us for additional troubleshooting assistance.