if you mean dual filament (three wires i think) one should be ground, one hi beam and one low beam so u can get the connector from autoparts store autozone i think has them and just splice it to your headlight harness...hope that helps
High beam wire from your USDM plug/harness to the high beam wire on the new H4H plug (you can tell by the coil in the bulb that has less wire or thinner gauge wire)
Low beam wire from your USDM plug/harness to the other bulb wire on the H4H plug
Run both your USDM plug/harness ground wires to the ground on the H4H plug (you can see which one is the ground by looking for both H4H filament ground straps in the bulb going to the same terminal).
Comments
Low beam wire from your USDM plug/harness to the other bulb wire on the H4H plug
Run both your USDM plug/harness ground wires to the ground on the H4H plug (you can see which one is the ground by looking for both H4H filament ground straps in the bulb going to the same terminal).