Canada required that all cars be equipped with DRL's approximately near the end of the lifespan of the W124. On my W124 '95 E420, I don't have "dedicated" DRL's, but my low-beams automatically engage when the car is turned on. I don't need to do the "two-clicks" of the knob to engage the low-beams. So back to your question, it seems you also have a W124, so are you tryin' to ask how to do the wiring so your low-beans automatically turn on when the car is running, or are you lookin' for some sort of aftermarket "dedicated" low-beam light??? As LarryBible said, you can achieve the same effect by just turning on your low-beams...since there are no dedicated DRL's for the W124!
1995 black pearl/black Mercedes-Benz E420