yeah, my buddy has an audi and i was telling him what i was doing to the del sol and he mentioned that his does that but the rear lights and parking lights stay on... on a car like that it would be ok to leave those lights on... but the battery in the del sol is like a glorified D cell battery haha.. i dont think it would last the night or a work day with parking lights and tail lights on.. guess it couldnt hurt do to both..lol