The idea for this mod started a while back. I had plain power mirrors, no signal or puddle and wanted to add them with leds. I remember reading somewhere in the F150Online forums where someone wished their OEM turn signal mirrors did a chaser sequence like a cylon. Sounded like a great idea, why shouldn't they? So I proceeded to build my own. Each mirror has 5 amber leds, a led sequencer I bought off ebay, a 5v voltage regulator, and 2 white superflux leds from oznium for puddle lights. A big part of this mod is the sequencer, I looked at making my own or buying a pre-made one. I eventually settled on a pre-made one with different sequences and speeds, guessing I would be able to find one where the speed matched what I needed. The turn signal circuit is pulsed and I would need the sequencer to light my five leds before the flasher killed the circuit and started the sequence all over again. Another big challenge was drilling the holes for the leds. I wanted to angle them so the light was focused on the blind spot area, not back into the driver's eyes. I measured my angles and made a small wooden jig to get my drill angle right. I bought a couple old mirrors off another forum member and practiced on them - good thing I did! It was a pain. Other than that it was just a bunch of time soldering leds and such. All in all, I love it! Total cost for both was $72. Here are some pics, and a few videos of everything in action. If you have problems with the videos, make sure you have Quicktime installed.
A mp4 video (1mb) of the puddle lights in action: Puddle lights
A mp4 video (828kb) of the chaser sequence in action: Chaser sequence
A H.264 video (1mb) taken from 20, then 36 feet: Distance test
The positioning of the sequencer, voltage regulator, and leds:

The back of the leds, siliconed in place:

The inside of the mirror cover, showing the two leds for the puddle light:

The bottom of the mirror cover, showing the leds for the puddle light:
