Worked on the front DRL's today. I wired them up to the sidelights as the projectors are covering the old sidelight bulbs (as explained before), so these will be the new sidelights. The kit comes with a relay with three wires (ground, 12v, and headlight), and if you plug the extra headlight wire into the headlights, it'll turn them off when the headlights are turned on. Haven't used that for now, but I may wire it in at a later date.
I'm a bit picky with colours of lights, don't want them to clash if there's a drastic difference in kelvin temperature between the DRL's and the headlights. If it is, I'll just have them turn off when I turn the headlights on.
I was going to drill two holes in the fins or up under the bumper in the grill, but I used very small but strong cable ties instead to attach the fixture on which the DRL's attach to, so it's very secure without it permanently altering the car. The wires are fed along the bumper, and if you pop the headlight out you can see the grills, so they go up through there and into the headlight through a hole in the back of the headlight cover (already existing for HID ballasts). They then plug into the sidelight bulb socket instead of an actual bulb. The beauty of this is that I don't need to take the front bumper off to do it.
Started work on it:
And voila!
And off.
They look great****