Sorry I can't provide you with an answer to the question. However, I would strongly encourage you to leave it as is. I think day running lights should be compulsory on all cars, especially at this time of year (Winter, in my hemisphere!).
Just today I was thinking how much earlier I could see other cars with their headlights on than those without. I know others have a different opinion on this, but aside from perhaps replacing light bulbs slightly more frequently than usual, I haven't heard any convincing arguments against them.
Cheers,
AJ