Is it hard to install them if you have cold weather package? Do i have to take out the headlight washer system from the headlights? Also are there other screws than the two visible on top of the headlight because i cant seem to move the whole thing even after i removed them? And do I just unplug the halogen bulb plug and plug it in to the ballast/that silver metal box thing near the bottom of the headlight? Thanx in advance.