Visual Guide to Installing the Nest Protect Smoke and Carbon Monoxide Alarm

Steve and I installed two Nest Protect smoke and carbon monoxide alarm from nest.com, and thought you might enjoy a visual guide to how it’s done.


NOTE: Do NOT try this if you’re not already comfortable with identifying the correct circuit breaker and how to ensure that you won’t get electrocuted! If you’re not comfortable with this – hire a professional or ask your mom to help you!

01 Revealed wires from old smoke detector

01 Revealed wires from old smoke detector

02 New wiring harness

02 New wiring harness

03 Steve setting up voltmeter (safety first)

03 Steve setting up voltmeter (safety first)

04 Voltmeter connected to house wiring

04 Voltmeter connected to house wiring

05 Steve monitoring voltmeter

05 Steve monitoring voltmeter

06 Turning off the circuit breaker

06 Turning off the circuit breaker

07 Confirmation electricity is not flowing

07 Confirmation electricity is not flowing

08 Stripped portion of the cable wos originally too short

08 Stripped portion of the cable wos originally too short

09 Connecting new cable harness with wire nuts

09 Connecting new cable harness with wire nuts

10 Buzzy monitoring the operation

10 Buzzy monitoring the operation

11 New wire harness in place

11 New wire harness in place

12 New faceplate

12 New faceplate

13 Supplied mounting screws excessively long so we used original screws

13 Supplied mounting screws excessively long so we used original screws

14 Electric drill to start the original mounting screws bayonet side down

14 Electric drill to start the original mounting screws bayonet side down

15 Switched to manual screwdriver as plate was very thin

15 Switched to manual screwdriver as plate was very thin

16 Underside of nest showing bayonet mounting holes and connector port

16 Underside of nest showing bayonet mounting holes and connector port

17 Nest bayonet mounting holes visible and connector attached

17 Nest bayonet mounting holes visible and connector attached

18 Constantly bumping the button caused the Nest to keep trying to test

18 Constantly bumping the button caused the Nest to keep trying to test

19 Blue light after successful test

19 Blue light after successful test

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