Yet another reversing light problem

Hi All
I have just replaced the bulkhead on my 1988 90, was a 19j now a 12j.
All is fine except the reversing light does not work.
took lots of pics but not a very good one of the reversing light multi plug.


Looks like I have green and brown and a green coming from the switch and a green and brown going back to the lamp but for the life of me I cannot get the right way to plug it in.
Could some one take a piccy of their multiplug or explain how the wires go please.
Sorry, really dumb on my part :-(

you should have a green live from fuse box that goes to switch then green/brown comes back from switch to lamp

Many thanks James, that clarified it, reverse light working now.