Actually, when Eric Y had his 95 Coupe with 1 piece, he had the H4H wired to the hgih and low beam and used a US version foglight switch to turn on the inside goflights. It was the best of both worlds. As far as I know, H4H, is still simply a 3 prong bulb with a common ground. You simply need to wire the common ground to the low beam ground, and wire the low beam positive to the low beam prong, and the high bean positive to the high beam prong. I believe the low beam wire on the US verion harness in green, and the high beam wire is red, while both use black for ground. But with HID lights, you simply loose the high beam, unless you fake it by wiring the hgih beam to the JDM foglights.