We remove a combination of devices (see. Removal of a combination of devices, replacement of lamps).

Thin shlitsevy screw-driver we weaken an inhaling of the lock screw and, rotating the handle counter-clockwise, we remove it from the switch.

Kruglogubtsami is turned on a nut of fastening of the switch.

We remove the switch.

We mark an order of connection of wires and it is removed their tips from switch conclusions.
We establish the new switch in return sequence.