Can you use a 4 wire plug on a 3 wire dryer?
Can you use a 4 wire plug on a 3 wire dryer? Answer: You don't. It is not possible to install a four prong outlet using only three wires either legally or safely. Put the three prong outlet back and install a new three-prong cord on the dryer. Can I change a 4 prong dryer plug to a 3 prong? Once the four-wire cord is removed, it is time to install the new three-wire cord and plug. The outer two wires can be interchanged, but never put the center wire of a flat, three-wire cord on anything but the center...