On each wire pin going into the plug there is a small tab on the side of the pin, you go through the back of the connector with a wire ,paperclip opened up and trip the tab for each wire and pull them one at a time .
MAKE SURE you wright down the location of each wire in the connector before you pull them out. The switch assembly has 3 screws holding it in the column and the whole thing wires and all pull right out .
I would put that connector back in place to keep the wires from pulling apart . When you put the wires back in gently spread that tab back out on each wire ,don't break it off ,and it will lock back in the connector with just a push .