Tail light wiring problem

[MarkyMarkOZ]

Hi All, I have a 2nd hand LH tail assembly I am trying to fit, unfortunately it came without the plug body, just 6 black and one green wires hanging out with pins on the ends. How do I determine which pin goes where when I swap the plug body over (note: I am replacing the tail light assembly because the lens is cracked and letting water in). Thank you all in advance.