[dragerboat]

Hi guys i have a 2009 Focus SE and i just ordered 2 halogen bulbs H13 (9008)5000k 55 watt 12 volt white bulbs to replace my factory yellow ones for my headlights.Now i noticed that my Daytime Running Lights or (DRL) run off the same bulb as where my Hi-Lo beams do.I also saw on a few websites where they are saying that to replace my DRL i need the model 3157. I don`t know where that light bulb is suppose to go because i have only two bulbs in my housing unit the headlight bulb and the signal light bulb. my question is doesn`t the DRL run at a lower voltage from the high beam filament? And if so what is this bulb 3157 they are talking about. Also are those bulbs i have ordered adequate enough to use in my housing without causing any damage>

Thank Guys