For the DRLs, you just need to put a capacitor in parallel with the +(low beam) and - connection at the stock headlamp harness.
This 4700µF capacitor from your local Radio Shack should do the trick:
This will keep the relay from chattering when the DRLs on. I recycled an HID kit from my old car, and bought the H13 bulbs from a local shop. The only thing I had to do was add this cap since my old car didn't have DRLs.
The attached diagram is just something I found online to show you what I'm talking about. I don't take any credit for it.