4 Wire Outlet To 3 Wire Plug February 9, 2019 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 How To Do Wiring4 Wire Cord To 3 Prong PlugKenmore Electric Dryer Wiring Diagram5 Way Trailer Wiring HarnessHow To Wire A 4 Pin RelayElectrical Wiring 101 BasicsLight Switch Load WireInstalling A Dimmer Switch With Multiple Switches