The turn signal function you can just splice off the signal wire. Get a multimeter and take off one of the plugs for the bulb. And turn your lights on, test which one has voltage. The one that doesnt have any voltage is the one that makes the light brighter for the turnsignals.
As for the mood lights, I'd run it off the illumination wire for your headunit????
And I believe PIAA makes super white bulbs for lisence plate lights... Cleaning them out helps too...
Im interested about the door lights and mood lights, I'd be interested to see them when complete!!