sorry it took me so long... hopefully this helps some.
in the pic you notice i state "notice: red to black, black to red". thats where the small harness comes into play, if the harness isnt used, the polarity from the factory connector to the ballast isnt correct. i just did a HID install in my friends car. i had it wihtout using the small harness and it didnt work, when we used it and connected the small harness positive to positive and negative to negative, it worked.
