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Mike, Master Electrician
Category: Electrical
Satisfied Customers: 1425
Experience:  Licensed Master Electrician - OnQ Certified Data Voice Audio Video Installer
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I have a three way switched light. I want to replace one of

Customer Question

I have a three way switched light. I want to replace one of the switches with a single pole timer. This will necessitate eliminating/bypassing the other switch. An electrician did this already for me for another three way in the house to install a ceiling fan that required a single pole switch. He bypassed the wiring on the now dummy switch. How would I do this for the timer switched light? Can you explain?
Submitted: 4 years ago.
Category: Electrical
Expert:  Alex replied 4 years ago.
Hello and Thank you for posting on My name is XXXXX XXXXX I'm here to help you.

1. How many and what color wires are coming out of timer?

2. How many and what color wires are in each box of 3 way system?

3. Switch has 1 black and 2 brass screws. Which color wire is connected to which screw?

4. Lets number the switches . Switch 1 where timer goes, switch 2 dummy to be.
Customer: replied 4 years ago.

Timer: 4 wires - blk, wht,red, grn
Switch 1: 4 wires - blk,wht,red, grnd
Switch 2: 4 wires - blk, wht red, grnd
Expert:  Alex replied 4 years ago.
There are no more wires in each switch box? Just black, white, red , green?
Customer: replied 4 years ago.

Each box has just blk, wht, red, and ground wire.
Expert:  Alex replied 4 years ago.
No other wires that are not connected to the switch?