I was looking at upgrading my bulbs but was wondering if having daytime running lights would be an issue? I was thinking of the Philips +50 or +80 but did not know if that would put a big load on my wiring having them run all day

 

As I understand it the daylight running lights run at 50% voltage. I would think the issue would be can the bulbs handle running at the reduce voltage.

 

I dunno on this one I like the idea but I see a lot of drl's w/one side out they seem never to be kept up the way a normal owner would. Yuk Human's! imo btw.

 

do they run at reduced voltage, or are they pulsed at full voltage at high frequency?

 

I believe they use the high beams as DRL's just at a reduced wattage.

 

I think I saw somewhere that they are pulsed. If I ran a relay to get more power to the headlights would this flip the relay on and off every pulse?