300SD79

Hi Im new here. Ive had my benz a long time now. It was actually my fathers car till the thing pratically started falling apart. I started to fix it up and its going pretty well. You can check it out at http://www.cardomain.com/memberpage/497786 Now I need some help on how to hook up the radio. I have no clew how to do it. Oh yea I also need help on the windows. Do I have to replace the whole motor because this clamp thing broke that holds the metal peace that moves the window, or is there anywhere I can buy this part.