always new it would be a head scratcher, and boy was I right.

Can anyone using idiot speak explain what the numbers coming off tyhe fuse box on the vicky green loom diamgram mean?

there is a number then a second number and then under that a letter or two.

I think, but I'm probably wrong the the letters are colour codes but I'm stumped what the other two mean. I thought that they possibly were pin numbers for the column stalks but the diagrams I have don't have the same numbers.

Any help in non electrical jargon much appreciated.

Many thanks
Nigel