Ok so heres the problem I just got my new projector headlights this morning and Im already having problems the headlight on the drivers side hooked up and went in perfectly but the one on the passenger side were the new headlight hooks up into the harness on the car there is a three prong plug and there are only two prongs in the harness the headlights wont come on or anything the parking lights work but nothing else so far what do you think I should do???

**************************EDIT******************** *******************************
ok so I fixed the problem with the plug but there are still problems on the right side headlight I had just fixed the plug I was adjusting the headlight beam on the high beam light and as I was tightening the screw the headlight just went off before the high and low beams worked but now only the low beam works all the fuses are good and the bulb is good so what is the problem thanks for all the help!!!