jdm headlights use h4 for low beams and h1 for high beams. that's why they wont plug into the stock harness. you can pick up a h4 "pig tail" or "repair harness" from most autoparts stores. it plugs into the back of the h4 bulb, and u need to splice it into the factory wiring. there are 3 wires on the h4, but u only need to use 2 of them. i forget which ones tho.

the h4 harness should also fit on the bulb holder for the highbeam