Thanks for the reply. They are 49 way I believe, they are what originally came with the machine. Ill take a look at the diagram and see what I can make of it.
EDIT: Looking at the guide it indicates that the "main harness" should be connected to the input and that the auxilary board provides output from the mainboard, this must be how it works, I'll just need to pick up a fuse to pop in there and we'll see what happens. Where would the switch be to switch from 8-49 way?