Matt16v

Hi peps.. I've a standard is200 se auto. My stock head unit the cd changer is knackered. I have a parrot mki9200 Bluetooth kit that I would like to install. I'm happy to cut and wire in. Would rather do it with having to buy leads etc. And don't want to change the head unit as all my music is streamed. The reason to why I want to install the parrot Can any one point me in the right direction of how to install. Not afraid to cut a few wires lol. Many thanks to all