Will the cd player from 1996 Volvo 960 work on 1998 Volvo S70? It says "premium sound system" on the cd player from 960. I only have cassette player on my s70. Do I need a security code with the cd player from 960? I have not disconnected the battery on 960 myself so I am not so sure.

 

It might work.
Yes you will need the code to make it come on.

 

you could do a wire cross reference. This would tell you what wires do what. Compare the 2 and see if all the wires match. Just because the plugs are the same doesnt always mean they will work. Though i work on fords mostly so.