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Joe Pfeiffer

writes:

On Sat, 21 Nov 2009 17:19:05 -0700, Joe Pfeiffer
wrote:

This I can readily believe -- but that's absolutely not what the
automotive "replacements" that try to drop a bunch of LEDs in to replace
an 1157 are like.

We are not talking about the cheap chinese 1157 replacements.

I have a car that came from the factory with LED tail light/brake
lights. Trust me, they are a lot more visible from any angle then any
incandescent tailight you have ever encountered.

A taillight engineered around an LED array can work at least as well as
incandescents, with all the longevity and energy savings of LEDs. I can
also believe in an LED array engineered to fit behind a particular
existing lens, which would also work as well, though I've never seen it.
But this discussion started (when I brought up the topic) with drop-in
retrofits for auto taillights -- ie cheap Chinese 1157 "replacements".

And those fail for all the reasons that have been quoted enough times in
this discussion that I snipped them this time.
--
As we enjoy great advantages from the inventions of others, we should
be glad of an opportunity to serve others by any invention of ours;
and this we should do freely and generously. (Benjamin Franklin)