blocking diode equal rectifier diode?

No I was saying in the past I had bought the 6amp rec. diodes that I now have laying around to link high and low beams on my atv, or 4 wheeler, not my car. And yes the filaments are seperate- the low beam lights are body mounted, the high is handle bar mounted, totally seperate bulbs. but thank you.

as for legal or illegal use in cars, some vehicles, like my honda, use low and high together when highs are turned on. some vehicles, like my gmc, use low or high, either or, but not both at the same time. and both of these vehicles have seperate bulbs for each, not double filament bulbs.