Originally Posted by Bill Harris
Here is the problem. The light from the White LEDs is not the same as the white light from an incandescent. An LED-- whether it be yellow, red, or green-- puts put almost pure light of that color. Look at them as sloppy lasers. A White LED uses smoke and mirrors. It puts out Red, Green and Blue light and mixes in specific proportions to create light that is perceived as white to the eyes.
I did some testing and determined that once the blue component of a white LED was filtered out with a amber (yellow) lens, the brighter white light was reduced ot the intensity of an amber LED.
So I got a pair of Custom Dynamics Amber LED clusters to replace the 1157 bulbs in the front turn signals.
Those suckas are BRIGHT! I did a temporary hookup to 12v and looking at the cluster for a moment left purple spots in front of my eyes for a couple of minutes.