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You should definitely use RED leds when replacing taillight bulbs. Keep in mind that "white" LEDs are typically illuminate heavily in the "blue" spectrum and actually have very little red light in them. Below is a graph showing the typical spectrograph of a "white" LED.[ATTACH]99213[/ATTACH]Secondly the taillight lens pretty much filters out all other colors except for red (that's the whole point of the red plastic), so your super bright white LEDs get reduced down to just the red spectrum (which is a very little amount anyway) plus a little bleeding from the yellow/orange. Basically everything from ~550nm and below will be filtered out..By starting with a red LED you don't have that problem. The light will shine more red and it'll probably be brighter overall.
You should definitely use RED leds when replacing taillight bulbs. Keep in mind that "white" LEDs are typically illuminate heavily in the "blue" spectrum and actually have very little red light in them. Below is a graph showing the typical spectrograph of a "white" LED.
[ATTACH]99213[/ATTACH]
Secondly the taillight lens pretty much filters out all other colors except for red (that's the whole point of the red plastic), so your super bright white LEDs get reduced down to just the red spectrum (which is a very little amount anyway) plus a little bleeding from the yellow/orange. Basically everything from ~550nm and below will be filtered out..
By starting with a red LED you don't have that problem. The light will shine more red and it'll probably be brighter overall.
