How To Replace A Dryer Cord December 16, 2018 Change a 3. You can convert an older dryer to work with a new type 4-slot outlet by replacing the old cord, but you have to wire the dryer properly for safety. www.thespruce.com 220v 3 Wire PlugWall Switch Wiring DiagramFind An ElectricianWiring Lights Together240v Breaker BoxThe Red Wire4 Wire To 2 WireTakeuchi Tb135 Wiring Diagram