CDC-4 6 stack CD changer

[Fourcarrz]

I am trying to reconnect the CD changer in the boot and cant find one of the connections.
In the attached image there are three wires in the right location. The small black connector fits and supplies power that can be heard when connected. The red large connector is too large to fit in the optical plug on the changer. There is another loose wire which has a black loop fitted on the end.
Am I missing something?

[Fourcarrz]

Thanks Chris you are correct I have removed the loop and can see the optical connector. Now I have to work out how to remove the side trim panels so that I can access the cables to make connection and position the changer in the bracket.