In my opinion, LED strip isn't outputing safe enough light volume as DRL.
Most of factory DRL aiming around 250-400lm forward direction ( which is about little brighter than turn signal output level).
This is considered visible enough druing bright sunny condition and yet.
To accomplish these output level with LEDs, need at least <4W-5W of LED outputting power with proper optics to go with.
With that level, you will need heatsinking and LED strip never be able to have this kind of setting due to structure.
LED strips will be good for parking light alternative, decorative illuminaiton though.
If you have seperate high beam(stock Halogen), following should give you stock style DRL. ( PWM dimmed DRL using high beam)
[img width=1024 height=512]http://i47.tinypic.com/35lw67c.jpg[/img]
Left hand side, light blue circled circuit is for trigger condition.
IGN on + Parking brake release trigger DRL on
Once DRL triggered, regardless operation of parking brake(set/release), DRL stays on as long as IGN on or TNS on(parking light/headlight on)
When TNS on, DRL will be cancelled and when you turn TNS off, DRL back on.
right hand side is PWM circuit, so high beam bulb can be dimmed for DRL use. By changing duty with VR(1M), output can be adjusted almost 0-100%
about 30-40% or less seemed OEM brightness..not sure exact number though..
far right relay is for triggering Hi Beam use/ Passing, so while DRL's dimmer operation, when you turn high beam for passing, high beam will light with full intensity.
If you have stock Bi-Xenon HID, and want functinal LED DRLs, you probably have to get some DRL kit and custom to fit