Old 2 Way Switch Wiring May 10, 2019 Electrical Helper . Find our DIY wiring a 2 way switch Video, Diagrams and explanation. Easy to follow instructions on wiring a 1 gang 2 way light switch. electricalhelper.co.uk 4 Pin Trailer Wiring KitConnecting A 4 Wire Dryer Cord3 Wire Romex With GroundRange Power Cord Not Color CodedTwo Way Light Switch CircuitHow To Wire Multiple SwitchesNormally Closed Contact SwitchLight Switch Cable Size