Just went to the car wash and watched as it was driven from the outside, in. Fog lights(led strip) were on but no DRL and lights set to auto. Once car was pulled into the bay, headlights went active but still no DRL. I too am confused as to when they actually come on? Ironically this morning I bought a bunch of LED's to replace all the stockers. Now I'm wondering if it was necessary to buy the 20 pack.