I've looked into this, it depends on if you still want them to be DRLs or just turn signals.
If you want them to flash when the turn signals flash, but not stay on all the time while driving, tap into the blue-white wire going to the turn signals, cut the brown wire going to the marker lamp, then run the tap to the brown wire. I would suggest doing the splicing at the wire loom, rather than the back of the headlight, so the headlight can still be removed/replaced.
And please use solder, a soldering iron and heat shrink tubing, so you don't have to go back later and replace corroded, dead wires.
