Replace the fuse and unplug the DRL heat-sink. That's how mine are. They are off during the day, but once it gets dark, they still come on automatically.
To unplug it, open your driver's door all the way. There is a small access panel there; gently use a key or flathead to open the panel. There is a heat-sink in there on the left with a black plug and a blue retainer. Remove the retainer and unplug that connector and you will have automatic headlights, but no DRL's!
Sometimes, however, you must unbolt the bracket for the sink (in my case, the blue retainer was too stubborn even with 45* Needle Nose!) You can access it from below the dash. Easiest way is to move the seat all the way back and lay with your back on the floor with your feet outside the car and unbolt the bracket/slide sink off rail/remove clip/unplug/replace sink. The bracket is really close to the parking brake bracket.
Good luck!
I can go take some pics tomorrow if you want.