Sometimes the switch wiring connection diagram is printed on the inside of the 4 way switch packaging box see example below. Follow the switch manufacturers instructions and wiring diagram as the connections on the switch vary by manufacturer.

A Safety Guide To Switches Ee Publishers
Wiring diagram of intermediate switch. Intermediate switch wiring diagram new cable colours the 3 gang intermediate light switch is used where three or more switches control one light and used in conjunction with two two way light switches to achieve this. Staircase wiring circuit diagram how to control a lamp from 2 places 2 way light switch. To wire a three way lighting circuit you will need 2 two way switches and an intermediate switch. At the other end you connect the other 3 way switch with either the line or the load. An intermediate switch is a three way light switch it is used when you have three or more switches controlling one light the middle switch needs to be an intermediate light switch. This video also shows how an intermediate switch works.
In a previous video i showed how a two way. Intermediate switches can be used for 1 and 2 way switching. The diagram shows the common method of wiring an intermediate switch into a two way light switch circuit. Related electrical wiring tutorial. Application and uses of intermediate switch. Intermediate switch is mostly used in a hall big rooms or godown where different lamps are needed to onoff from different places.
What does a 3. If replacing an existing switch note the location of the terminals and the colour and position of cable connections.