cd changer wiring / where does it go

[lutonmatt]

hi all
just got my self a cl55 is a nice motor but the changer did not work
so took all the boot out and changer out to find it was not plugged in and the fibre optic lead was missing

so went on good out fleabay and ordered a lead
come today and thought that's good will do that tonight as the radio is getting boring

but cant find where the fibre optic lead goes
well know where it plugs into the changer lol

so my question where does the other end go

is a 01 cl55

many thanks all