You can fix only one color you like by pressing the gauge back "set" button. Water temp Specifications Input signal: 0-190 ohmsNOTES: 0-190ohms fuel level sensor only fit for 0-190ohms fuel gauge. This gauge have 7 backlight color : red、green、blue、yellow、olivine、orange、purple, totally 7kinds different backlight color, it will change automatically every 1 minute.
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