ok go to ur local autoparts store, they sell universal weather proof connectors. purchase them. now make ur own connector from harness to headlight. it wont be "factory" but it will look nice and clean and u can still disconnect ur headlights. hardwired ftl!
Oh and there is no "headlight" harness on s14, the harness is the main engine bay harness and the harness just plugs dirctly into the bulbs. Fyi