P
Puppes
Guest
Please don't laugh but I'm unfamiliar with these English terms, What's the difference? Is the half beam the one used when travelling on roads with regular traffic and main beam the light used when travelling "alone" in the dark on the road with little or no other traffic? If so, is it possible to just switch the two half beam bulbs for a pair of Philips Blue Vision Ultrablue, and leave the two main beam bulbs as is?