Hi there, recently I changed a bumper on an SLK250, and I bought one with rear parking sensors(my old one did not have(could not find one without them)). So I have the r.bumper with parking sensors now the question is there a possible way to connect them? If yes how? I can't find the plug because I assume by factory standard it was not installed, I assumed they all made the same just programed difrently, or some components are not installed(i mean the cable is not installed due to pack that it was bought was without). I hope I'm making sense 
