Step 1
Turn off the power to the circuit that feeds the pressure switch.
Step 2
Open the panel on the pressure switch to expose the black and white wires inside.
Step 3
Feed the incoming power cable from the house into the switch body and clamp it in place with the clamp inside.
Step 4
Strip the jacket of the cable back using the wire strippers to separate the three wires inside the cable.
Step 5
Strip 1 inch of insulation from each of the wires using the wire strippers.
Step 6
Twist the black wire around the black wire from the switch using a wire nut.
Step 7
Twist the white wire around the white wire from the switch, also using a wire nut.
Step 8
Wrap the bare copper ground wire from the cable onto the green screw located on the inside wall of the switch body. Tighten the screw with a screwdriver to secure it.
Step 9
Replace the front panel of the switch.
Step 10
Turn the power back on to the circuit.