I was thinking you could get the extra wiring from the side turn signal. What did you use to tap into it?
Also, with the resistor getting so hit from the DRL, could it be put in the path of the turn signal wire? This would be the source of the hyper flash and would lessen the heat caused from always on operation.
Just did this in my 2005. I used new plugs from Advance Auto Parts (some kind of Dorman part #) and found that to be easy when putting this all together. All I need now is clear fogs, which are proving hard to find cheaply. Great write-up!