Step 9: Make the Wire Connections

Wire connections
Photo: Keller & Keller Photography
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From the bathroom, unscrew and remove the blower motor from the vent fan housing. Save the screws.

Next, unscrew the built-in receptacle from inside the housing to expose its wiring. Again, save the screws.

Use wire nuts to join same-color wires with the ones from the electrical cable you fed into the housing in Step 5: white to white, black to black.

Wrap the bare copper wire under the green grounding screw inside the housing and tighten the screw. Place the electrical receptacle back into position and secure it with the two screws removed from it earlier.
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    Tools List

    • caulk gun
      Caulking gun with silicone adhesive,
      for adhering wall cap to house siding
    • speed square
      Layout square
    • drill
      Drill-driver with 4½-inch hole saw,
      for cutting duct hole through sidewall
    • spade bit
      Extra-long, 3/8-inch-diameter spade bit,
      for drilling reference hole through ceiling
    • jigsaw
      Jigsaw,
      for cutting hole in bath ceiling
    • 16-foot tape measure
      Tape measure
    • eye goggles
      Goggles
    • extension ladder
      Extension ladder
    • ladder
      Stepladder

    Shopping List

    1. VENT FAN

    2. TARPS

    to protect floor and fixtures from dust



    3. 90-DEGREE SHEEET METAL DUCT ELBOW

    to connect flexible duct to vent fan



    4. 12-INCH CONNECTOR DUCT

    5. CABLE CONNECTOR

    6. WALL-CAP KIT

    7. FOIL DUCT TAPE

    8. DUST MASK