Quote:
Originally Posted by NeilBlanchard
The good news is, that with pure DC, LED's should last virtually forever - or certainly longer than the car they are installed in.
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You'd be right, if only cars offered pure DC!
The main reason cheap LED bulbs fail is that their drivers are not equipped to deal with the constant bombardment of noise and voltage fluctuations in the automotive environment. I've read articles suggesting that electrical filtration and component robustness should to combine to handle up to 120V spikes and numerous other energy fluctuations.
Perhaps someone here has experience in the OEM world of electronics supply who can comment further?
I bet comparing the schematic of a $5 aftermarket LED replacement bulb with the schematic of an OEM LED tail light assembly would be very telling.