I have a pioneer stereo system fitted into my car which I now changing to fit in a jvc jd-r301 stereo system, I am stuck on how to connect it in as the wiring is completely different.. The new system has a connection which has two types of plug ins which cannot be connected to the original fittings in the car! I'm realy new to this and I need to know how to connect the two plug ins into the single connection hanging out of the car HU .. Any ideas??