Nato 12 pin to 7 pin conversion

Hello there!
My 1986 ex military 90 has a 12 pin nato socket on the back. Does anyone have a converter cable to a normal 7 pin?
Or have any of you had experience in changing the socket to a 7 pin and just forget about the 12 pin all together. What parts did you use etc....

Thank you soi much guys!

think its covered in the CFAQ section

i have a diagram explaining how to convert it, hang on

here ya are