I need to convert from a 4-prong cord to a 3-prong cord. Is this possible?

On a 3 prong you have HOT, HOT AND NEUTRAL and on a 4 prong you have HOT, HOT NEUTRAL and GROUND

Neutral and ground are electrically the same. They are coded as white and green.

Unplug the dryer then remove the terminal block cover and disconnect the 3-prong cord from the dryer. Note that the cord has red , black, and white wires but sometimes the red and black wires are both replaced by same color wire, usually gray and can switch places. There's also a ground strap wire also connected to the center terminal together with the white (neutral) wire.

Get yourself a 4-prong cord and note that it has red, black, white, and green/yellow wires but sometimes, like the 3-pronged one, the red and black wires are both replaced by same color wire, usually gray and can also switch places. All you have to do now is connect the 3 wires in the same manner they are connected as 3-prong cord to the terminal block. The ground strap wire now just need to be connected to the remaining 4th wire, the green/yellow wire instead of the center terminal together with the white (neutral) wire. Reinstall the terminal block cover and it's done.

It can be observed that converting a 3-prong cord to 4-prong cord is merely splitting the neutral line and the ground thereby increasing the number of prongs from 3 to 4 whereas, on the other hand, converting a 4-prong cord to 3-prong cord is merely joining the neutral line (white) and the ground (green/yellow) thereby reducing the number of prongs from 4 to 3.. The links below might enlighten you further on this matter.

Four-prong to Three-prong Electric Dryer Conversion
Three-prong to Four-prong Electric Dryer Conversion

It's either you convert the 3-prong outlet to 4-prong or the 4-prong cord to 3-prong. But the latter is easier and more feasible. Unplug the dryer then disconnect the 4-prong cord from the dryer. Note that it has red, black, white, and green/yellow wires but sometimes the red and black wires are both replaced by same color wire, usually gray. The red and black wires are lines L1 and L2 reversibly, meaning they can switch places, while the white and green/yellow wires are the neutral line and ground, respectively.

Get yourself a 3-prong cord and note that it has red , black, and white wires but sometimes, like the 4-pronged one, the red and black wires are both replaced by same color wire, usually gray and can also switch places. All you have to do now is connect these 3 wires in the same manner they are connected as 4-prong cord to the terminal block. The wire strapped to the dryer cabinet and connected to the green/yellow wire of the 4-prong cord wire is now left hanging. The last step is to connect this hanging strap wire to the same terminal on the terminal block (center) where the white wire (neutral) is connected and it's done.

It can be observed that converting a 4-prong cord to 3-prong cord is merely joining the neutral line (white) and the ground (green/yellow) thereby reducing the number of prongs from 4 to 3. On the other hand, converting a 3-prong cord to 4-prong cord is merely splitting the neutral line and the ground thereby increasing the number of prongs from 3 to 4. The link below might enlighten you further on this matter.

Electric Dryer Prong Conversion

There's a ground strap wire (green/yellow) attached to the dryer cabinet and connected to the center terminal where the white neutral wire of the power cord is connected. Disconnect this ground strap wire and remove the 3-prong power cord from the terminal block taking note where the wires are connecedt to. Connect the 4-prong power cord in the same way same wire colors of the 3-prong cord are connected to the terminal block. Connect the ground strap wire to the remaining fourth wire (green/yellow). Just do the reverse when converting 4-prong to 3-prong. The link below might enlighten you further on this matter.

Electric Dryer Prong Conversion

Yes, you can convert a 3 prong power cord to a 4 prong. The following link explains how:

http://www.fixya.com/support/r793520-3_prong_4_prong_power_cord_conversion

The main difference is how the neutral (WHITE) wire and the ground (GREEN) wires are connected. In a 4 wire configuration the neutral and ground are independent of each other.

If you have questions, please ask. I hope this helps you.

Green is always GROUND

The following link explains how to convert a 3-prong appliance cord to a 4-prong and vice-versa:

http://www.fixya.com/support/r793520-3_prong_4_prong_power_cord_conversion

If you still have questions, please let me know. I hope this helps you.

The following link explains how to convert your appliance from a 3-prong to a 4-prong power cord:

http://www.fixya.com/support/r793520-3_prong_4_prong_power_cord_conversion

I hope this helps you. Let me know if you still have questions.

The following link explains how to convert an applaince from a 3-prong power cord to a 4-prong:

http://www.fixya.com/support/r793520-3_prong_4_prong_power_cord_conversion

I hope you find this information helpful and that it clarifies any questions you may have. If you still require assistance, please let me know.

The following link explains the wiring scheme for 3 and 4 prong power cords. I know the instructions are for converting from a 3 to a 4 prong, but if you look under the "Additional Notes" section it explains how to convert back to a 3-prong if you are currently using a 4-prong.

http://www.fixya.com/support/r793520-3_prong_4_prong_power_cord_conversion

I hope this helps you. If you have any questions, please let me know.