drusus

Has anyone installed a backup camera in a CLK? I have a 09 CLK550 w/ nav and would like to have the backup camera, but the shops that I've spoken to say that it can't been done or it's over $1000 dollars to do. 1k defeats the cost benefit. I'm not afraid of a DIY, but it would be helpful if I could talk to someone who has aready done this. I've searched all over the internet and haven't seen any installed in a CLK. Surely someone has done this or had it done!