My plan is to run LEDs in the parking and turn signal and tie them in to a Sho Me STT led flasher. It will have all the bulbs dim for the parking lights and bright for blinker. You can even trigger the brake light wire which will make them solid bright.
I've done this with the turn signals from my Shrockworks bumper. But the bumper came with dual filament bulbs and a plug with three wires. I simply took the third wire, and spliced it into the positive wire for the parking lights... Can get pics if you want, but I doubt it will help much with factory lights