Wire colours for towing sockets

Does anyone have the colour scheme for the wiring from the harness into the rear light clusters, or point me in the right direction.
I am fitting a towbar and electrics to a 96 523SE (UK model). I am waiting for a workshop manual, but I want to get this done ASAP. Stephen
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.