After looking into this for a while I've got a few ideas that may work, though I have not tested them on the vehicle.
I dont want to confuse anyone with the more complex methods right now so lets look at the simple one wire connection method.
Find the light green with red stripe DRL wire going into pin 12 of the DRL flasher relay which is located on the back side of the driver side junction box.
Connect ignition based 12V+ to this wire. You can get that from one of the fuses on the same driver side junction box.
That really should be it, but understand that your DRLs will be on anytime the ignition is on.
Hope that helps, any questions let me know.