[homegrown]

Way back in the dim and dusty, I had a kit installed that was invented by a couple of guys (in Indiana, IIRC) that piggybacked the BCM, and gave me complete control over my headlights, in addition to disabling the daytime running lights without triggering a SVS on the IP.
Unfortunately, I think it's a bit of an electrical draw since I can't go much more than a week without driving my car before my battery is dead.