[ZTWsquared]

(05-06-2011, 11:15 AM)dragerboat Wrote: 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

Guessing here ... but there could be some models somewhere that have the DRL powering the parking / turn signal lights which would be the 3157 bulb. IIRC our front parking / turn light and rear tail / stop light are 3157. Other than that ... DRL = 3157 makes no sense to me.

I always thought that the DRL was 60% power to the low beams on our cars - but I'm not positive. The reason I think that is because when I switched my '07 ZXW to the Anzo projectors (separate high / low beam bulbs) - with the plug and play wiring it was the low beams that came on with DRL.