For wiper switch service and repair, open the hood and remote the negative
Battery Cable from the remote battery post. After that, take out the tilt lever and both upper and lower shrouds from the steering column. Afterwards, take the multi-function switch out by unscrewing the screws and disconnecting the cables. Installation should consist of using the exact steps you did for removal, always tightening the multi-function switch retaining screws to 17 in.lbs. (2 N.m) torque.