Headlamp question

I have a 67 Plymouth Fury with quad headlamps. My local auto parts supplier does not stock OEM style incandescent headlamps, but they carry Wagner H5001 and H5006 headlamps. These are a Halogen replacement that has the two and three prong connectors like the originals have. Are these safe to just plug in and use, or will they fry my wiring? I'm not educated in auto wiring or electricals, so any advise you have to offer, please dumb it down! Thanks.