Ok so I purchased an hid kit for my rado....9004 hi/lo bulb....I got the hid kit that's just one beam 9004...go to install and it won't turn on...stock bulb plug has 3 prongs which I'm assuming are hi. Lo. Ground. The plug on the hid has 2 prongs. Why would it matter if one of them would be missing ...is it wrong of me to assume they should work even if there isn't a 3rd prong? I've tried switching on the highs and lows...and nothing...what gives??