Pull the dryer away from the wall and unplug the old power cord, if the dryer already has one.
Unscrew the small metal panel that covers the terminals where the power cord enters the back of the appliance.
Remove the three bolts in the connection panel, using a hex-nut wrench.
Insert a bolt through each of the three round connectors on the end of your new power cord.
Connect the black wire to the left terminal and the white wire to the right terminal inside the dryer, tightening the bolts with your hex-nut wrench. Attach the center wire to the center terminal to ground the circuit, and tighten the bolt with the wrench.
Replace the cover plate on the back of the dryer, and plug the three-prong power cord into the wall receptacle.