Some fucknut has chopped the Parrot loom up for you. The 2 remaining ISO plugs are for the speakers so need to go between the radio speaker loom and the cars speaker wiring. You'll need to do some patching on it though as I'm afraid it looks a mess. I'd be kicking the shop firmly in th ebollocks for making such a hash of it.

Shame your not closer or I'd offer to look it over for you.

I'll go on a rummage and see if I can find the box mine came in and will scan and upload for you. Won't be before tomorrow though as I'm heading to Bristol in about an hour