Recently,noticed,alot of newer cars with DRL,never on their headlights at night,they should put the light switch to "Auto",because their cars got DRL & the meters lighted up with they started the car,the owners don't know back of their cars is totally dark,[no licence plate light,no small light],esp dark coloured cars or even worse MPV with tinted rear screen,the driver behind hardly can see anything.. ,so for safety sake,p/s put your light switch to "Auto"..