how do i wire towing elecs to 300tdi?

Hi, I`m in the process of fitting a towbar with electrics to my 300tdi discovery, iv`e got as far as finding the socket for it in the o/s rear light panel however all i have running from the trailer socket on the towbar is the 7 wire coloured flex minus the plug which i`m guessing would plug straight in. Can anyone tell me which wires running to the disco plug correspond to which ones on the trailer socket flex? Or where i could find a plug to fit the socket already in the disco?
All help gratefully received.

Wiring colours and plug positions shown in the attached list.

Personally, I'd find a Disco in a scrap yard and have the cable away with the plug on it - snip it off as close as possible to the back of the bit that sits by the tow ball and you should have plenty of spare..

thanks lifted, spent an hour looking at different diagrams and this is what i did.
Cut off the disco plug behind o/s rear light cluster stripped back all the wires, got a strip of connectors and connected the foll0owing wires together.

Disco Towing socket flex

Black - Earth White
Green/Pink - Brakes Red
Red/Black - LH Tail light Black
Red/Orange - RH Tail light Brown
Green/Red - LH Indicator Yellow
Green/White - RH Indicator Green
Red/Yellow - Fogs Blue

Hey presto, everything works as it should!!!!!!

God this boys good!!