How do you unplug a 4 pin connector?
Insert a small flat screwdriver under the latch and try pulling out the fan plug. You may need to very carefully pull the fan plug with a needle nose pliers to get a good grip on it.
Can you reuse push in wire connectors?
Connector is reusable on solid wires of the same wire gage or larger. If reusing connector, cut and re-strip conductors. In order to remove a wire, pull and twist the wire back and forth. DO NOT RE-USE connector on stranded wire.
Can you reuse wire nuts?
Also, don’t reuse a wire nut. The spring inside the nut stretches in use, and used nuts don’t make as good a connection as new ones. Before using a wire nut, take a look inside it. Debris can accumulate in the opening.