Originally Posted by 00R/T
If the parking light wire is live, the LEDs come on dimmed and it doesn't matter what the DRL wire is doing.
Heh, that's just what I confirmed in the garage by pulling the DRL fuse. LED trim isn't on the left/right HID fuses either. I didn't pull the BCM/Exterior Lighting #2 fuse yet, but that would be an academic result if it proved to be the related fuse.
Yes, the LED trim lights are on with the parking lights.
The board modification may be unavoidable. On your 300, is this board accessible without removing/baking apart the headlight assy? This is a tight area on the 2014 WK2; even changing the HID bulbs requires removing the air intake box.