![Image](http://xoutpost.com/gallery/files/4/1/AUX9.jpg)
I'm assuming that the cable plugs into the back of the HU, but there's nowhere on the back of mine:
![Image](http://www.soloartist.co.uk/public/X5//HU/01.jpg)
![Image](http://www.soloartist.co.uk/public/X5//HU/02.jpg)
and I've checked the loom in the dash, and can't find anywhere along there either. I did notice that the HU in the guide has a different part number to mine (mines a tape deck too)
![Image](http://www.soloartist.co.uk/public/X5//HU/03.jpg)
Any suggestions? Is it because mine's an early car? I've installed a few of these aux-in leads in the past (Z4, E46 M3) so I can usually find my way around these things.