The overload protector (labeled "B" below) is connected by two wires. One wire connects to the compressor relay (labeled "A") with a slip-on connector. Pull the connector firmly off of the relay terminal (do not pull on the wire). You may need to use a pair of needle-nose pliers to remove the connector. Inspect the connector for corrosion. If the connector is corroded it should be replaced.
The overload protector is held in place with a round spring clip. Using a screwdriver, pry open the spring clip and remove the overload protector.