BMW E39: SIRIUS XM, Aux Input, BM53 Radio Retrofit
Welcome to what is going to be a very thorough and detailed article. I am going to break down exactly what you need to do to retrofit a BM53 Radio, Auxiliary Input, and SIRIUS XM radio into your BMW E39 5-series. All of the components used in this DIY are Genuine BMW. No Chinese aftermarket garbage head units here! DISCLOSURE: This post may contain affiliate links, meaning when you click the links and make a purchase, we receive a commission.