Review on π WLJH 10 Pack Canbus T5 Green LED Bulb 2721 37 74 Wedge Lamp PC74 Twist Sockets for Dash Instrument Panel Cluster Lights Replacement by Daniel Drury
Light polarity sensitivity
I noticed that they are polarity sensitive only after installation. They fit in my dashboards and the larger T10 fits in the sockets that illuminate the dashboard. This eliminates the need for colored turn signals for hazard lights as the instrument panel is colored for each turn signal. The problem is how do you know you installed them correctly as the warning lights will only come on if there is a problem. They have a 50% chance of being used correctly. I don't see any way to turn them on for testing except on first boot and I'm not sure they should all turn on at this point.
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