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How can I dim my SCX gauges?

The SCX gauges feature integrated LED lighting and will not dim as desired when connected to a standard OEM dash dimmer.

To dim your SCX gauges we recommend installing one of our compact LED dimmer modules.

Alternate Option 1: Dimming Gauges With A Resistor
You can also dim the gauges by installing a resistor inline with the 12V ACC supply to each SCX gauge (not inline with the light connection). Installing the resistor lowers the voltage supply to the gauge which reduces the brightness of the lighting. A 0.5W 100 ohm resistor for each gauge works well however you can vary the resistance to your desired brightness.

If you dim the lighting using a resistor:

  • Make sure the 12V+ "Always On" connection to the SCX gauge is connected (see instructions). This connection must get a steady 12V supply.
  • Make sure you connect the resistor inline with the 12V ACC power to the gauge, NOT the lighting.
  • If your resistor value is too high, the gauge may not get enough power to operate correctly. If this happens, lower the ohm value of the resistor.
Alternate Option 2: Dimming Gauges With a Potentiometer
For adjustable levels of dimming, you can install a potentiometer to reduce the voltage supply to each gauge (which will dim the lighting). For 1-3 gauges we recommend a 5W 250 ohm potentiometer (Digikey Part CT3018-ND). For 4+ gauges we recommend a 5W 100 ohm potentiometer (Digikey Part 026T419S101A1A1-ND).

If you dim the lighting using a potentiometer:

  • Make sure the 12V+ "Always On" connection to the SCX gauge is connected (see instructions). This connection must get a steady 12V supply.
  • Make sure you connect the potentiometer output inline with the 12V ACC power to each gauges, NOT the lighting.
  • If your resistance value is too high, the gauge may not get enough power. If this happens, reduce the resistance.

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