I just purchased a 2007 BMW 335i and was wondering how this may be done. I know I can turn them on by turning on my parking brakes. Also, I can run daytime running lamp bulbs but those look kind of ugly. I just want to have my coronas turn on when my light switch is turned to automatic. Any ideas? Thanks in advance.
The coronas, normally called angel eyes, ARE the DRLs. They come on whenever the parking lights (not parking brakes) are on. They can also come on independently if you have it set up in either i-Drive, or if you don't have navigation then by using your instrument cluster menu system. It's all in the owners manual. Placing the headlight switch into the auto position will turn on the headlights if it's dark enough or if it's raining, which then turns on the angel eyes since the parking lights come on too. If you have DRL turned on as mentioned above, they would be on all the time and then the headlights would come on once it got dark outside. The parking lights are the orange ones on the very outside of the headlight assembly. If you have DRL enabled in whatever menu system you have, they are on all the time regardless of the headlight switch position. The angel eyes are run by a single bulb for each side of the car, a 35 watt H8 to be specific. The inner headlights (what used to be high beams) are the cornering lights and are operated by a 55 watt H3 bulb. These come on individually when turning if the headlight switch is in auto (and it's dark). They also both come on when backing up if in auto. The outside lights are the high and low beam lights, and should be a D1S bulb assuming you have xenon lights. These lights also pivot when turning if switch is in auto (and it's dark).