Need Info: 2002 OEM Radio Substitution

Hello all:
I have a 2002 ZX5 with a broken OEM 6-CD Changer unit. I want an OEM unit to replace it, but think maybe an OEM single-CD unit would be better than a
6-CD changer (less to break). EBay is filled with both OEM single-CD units and CD-changers.
Can anyone tell me if the (3) plugs that go into my 6-CD changer are exact fits for a single-CD unit from a 2002 Focus too? Is there any security issue I need to worry about (my 6-CD unit has a small removable security pannel) in mating a replacement unit to my car?
Also, some EBay single-CD listings mention "European plugs" versus "domestic plugs". Can anyone shed any light on this?
Thanks foa any and all info
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.