I've done this set up on three cars (mine included). I'm working on an installation write up (with pics) and hope to have it ready to publish within the next week or so depending on my work schedule.
White LED as DRL:
Amber LED turn signal (a bit washed out from the overhead light glare):
Overhead view (I was trying to capture the left turn signal but the shutter snapped between blinks):
And if there's any SoCal people wanting this done but too afraid to do it themselves, feel free to contact me for a quote.
Stay tuned....