ive looked in the manual and on the tech section and cant find anything, ive replaced my auto gearbox for a manual gearbox in my 120y, does antyone have pics of how they have rewired it, or know what wires are what

Sure, what is most important is what year is your 120Y. One of us will have a wiring diagram, but they are different for every year.

All of them have a Reverse switch. This wires to the same place as the auto I would think

If there are any other switches on the manual transmission I think you can ignore them

Then there is the automatic transmission interlock switch. Wire those together so you can start the engine (manual transmissions and cars don't have a switch for these two wires)