So I need HID's DDM's look great and have lifetime warranty which is awesome, whats even better is i have a second vehicle that is my summer vehicle that takes H4s so i can swap them back and forth in between the 2 when the season change from summer to winter hahaha so i would only be doing it once a year not to big of a hassle, but what exactly do i need, i want the 55w Hi/lo 8000k but then it asks about dual harness?? do i need Dual in and dual out???? do i need an error eliminator?? do i need adapter cables??? I didnt know that there were this many options, any help from ppl that have bought DDM for there runner