I've just bought a used superb with a parrot kit in it which isn't working no power getting to it had a look in fuse box and there's a green wire just siting there anyone know what it's for????

I suspect that used to be plugged into the fuse board somewhere but it's fallen out.

 

If there is a fuse between it and the parrot then it can just be plugged in (probably a switched live). If there isn't a fuse, then you should really fit a piggyback fuse to protect the wiring.

Thought it had been plugged in somewhere not sure if there is a fuse between cant get in behind the head unit

How would I ho about adding a piggyback fuse

Any idea what one it could have been plugged in to?

Any switched live should be fine, I'd use a multimeter to find one. I can't remember which are or aren't.

 

As for a piggyback fuse, you can grab them on ebay pretty cheaply http://www.ebay.co.uk/itm/221783594061 but a local autoshop should also stock them. Simply cut off the spade connector on the wire currently and then either solder or crimp on the piggyback fuse.