My neighbor bought a 4.5 1978 Mercedes sedan. Very nice, very low mile one owner. I was surprised that the becker looked just like the older one in my 1970. It is pretty nice and is a signal seeker which works great. Since he is swapping to a modern radio he offered it to me. Will this interchange with our older Becker radio and wiring? Just what I need right now is another thing to do on this car!!