How do I disconnect a wire

Unscrew the terminals holding the wires in place with a screwdriver. Pull the wires off the terminals. Bend the wires back with a pair of needlenose pliers, if needed, so you can pull off the wires.

How do you remove wires from a plastic connector?

In most cases, connectors either hold the wire in with a small metal prong or they are crushed onto the wire. With a gentle tug, the wire usually pulls out of the connector. Place a pair of wire cutters next to the connector and cut the wire to remove it from the connector.