Solid-state LED diodes never need replacement. Bright chrome-plated body, bezel, washer and hexnut. Quick connect terminals are polarized for ease of wiring. Fits into panels 0.020" through 0.300" thick (0.5 to 7.6mm). 12V.
Cole Hersee 12V LED Pilot Indicator Lights Reviews:
This is an exceptionally high quality indicator light suited for dashboards and panels that require an LED indicator with a refined appearance. The product is polarity sensitive and will not illuminate if polarity is not maintained. It does not come with instructions and is not marked for polarity. I used test leads and a small 12 volt battery to find the positive lead.
The LED is bright enough to illuminate steps or other areas requiring a courtesy light. It can also function as a chart light. I utilized a blue indicator to alert me to when my blue Ocean LED underwater lights are on. I have a green indicator for my bilge blower, and a red indicator for the livewell pump. They look great flush mounted in the dash.
The indicator is available in blue, green, red and amber.
The Previous review said the lights aren't marked for Polarity... Maybe he got some older ones... But they ARE marked on the terminals. There's a small "B+" on the positive terminal, so its easily hooked up. Besides, if you hook it up backwards, it wont work...so its pretty easy to figure out.