About the only way to do it is to remove the center console panel.

Take out the ashtray, take out the ashtray frame by removing the two screws in the back and pulling out starting with the right side - the power connector for the lighter is on the left side and you'll have to angle it funny to get it out. Once that's out of the way you'll see two screws in the wood panel. Take them out, slide the wood straight back toward the rear of the car to disengage the pin that hold the back and then lift it up.

As you're putting the new switch in, be careful of the plastic ring. Even on new switches it's easy to break. Ease the switch into place carefully.