How to plugin Goodmans radio to 1997 VW Polo?

I have Goodmans radio GCE-443 which I'd like to connect to my 1997 VW Polo. There are wiring instructions printed on the radio but which wires mean what in my Polo?
Is it possible to buy some ready made connector to link these two ends, i.e. the radio end with the existing plug in my Polo?
How can I remove the original but broken radio in my Polo?
Many thanks for your help.