You must now fit and replace the rear wiper switch then disconnected the negative terminal of the battery. However, there is always the problem of how to remove the nuts which hold the switch to its respective position on the dashboard, another issue will be if the switch has body clips, which when pressured will pop and detach the switch from any faceplate or dashboard. Disconnect the cables at the back of the switch and also remove the switch. For installation, one should use the reverse method of the one used during the removal of the program.