Pulled the head unit out so I could look at the connector and found, to my dismay, that the connectors had been cut off the head unit and off the loom

I would probably like to reattach an original connector to the loom. Question is, where can I get one and can anyone tell me how it's connected up i.e. which wires go where?
Obviously I'd then need to reattach the head unit's connector and wire it up properly or alternatively buy another head unit as I don't have a manual (and can't find a downloadable one) and no wiring diagrams. I'd really rather keep it though as it's got a 3.5mm input which is great for the iPod.
Honestly, what a botched job, a real piece of muppetry.
