It is not a bad job at all
Do you have two new 6-prongs plugs?
Do you have a schematic or instruction how to transfer all those wire from the 4 prongs to the 6 prongs???.
If you don't have a schematic and know nothing about basic electrical, then you should find out which wire goes where and what?
You can find out which wire is for what function by turn them on one at a time and measure the voltages while the plug is out.