Pavel adam

I have bought new sport steering wheel for my CLS 320 CDI 2007 model. The old one was just leather and new one is with combination of wood and look like AMG. the issue is that I would like to put the shift paddles on steering wheel (to shift gears by paddles). The problem is that dealer in Brussel told me that they are not able to install it because they do not have any experience. I have bought the paddles (metal ones). What I need more to buy in order to install these paddles to my steering wheel and to hook them up in the car. Is there any one who has the experience and who can assist me.

Thank you Pavel