There was a jack on ebay uk for a fiver i think.
You're has many more mod cons than mine! lol
mine only has rear speakers, no central locking, no elecy windows. I've took the rear wiper off, so if motor on yours is buggered, let me know and ill post a pic of mine and if its same you can have it.
Parcel shelf is a dodgy thing, kinda pushes in to back seats, not sure if mine falls off as the gad struts are knackered so i have to ballance the boot on my head lol.