Adding a switch to garage lights

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  #1  
Old 08-05-07, 09:53 AM
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Adding a switch to garage lights

Hi,

I have 3 lights in my garage controlled by a single switch. The wiring goes from the switch box to the first light in the center of the garage. From there, two wires run to two more lights. How would I add a switch so the first switch controls two of the lights and the second switch controls one light. I have access to the attic space above the garage and can get to all the wires. My house is 10 yrs old. I'm guessing this is pretty simple, but some detailed instructions would be much appreciated. Thanks.

Second Light
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First Light---------------Switch
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Third Light
 

Last edited by twitchylegs; 08-05-07 at 09:56 AM. Reason: Change Diagram
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  #2  
Old 08-05-07, 12:04 PM
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Tell us where power enters the picture and we'll go from there.
 
  #3  
Old 08-05-07, 12:14 PM
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Power comes in here

Hi,

Power enters at the switch box.

Second Light
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First Light--------------Switch-------power-------CircuitBreaker
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Third Light
 
  #4  
Old 08-05-07, 12:15 PM
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Where do you want to add this new switch?
 
  #5  
Old 08-05-07, 12:56 PM
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In the same switch box, right next to the current switch.
 
  #6  
Old 08-05-07, 02:22 PM
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Replace the cable from the witch to the first light with with three conductor cable (plus ground).

Add the second switch, use the red wire for the second switched hot, make the changes at the first light.
 
  #7  
Old 08-06-07, 07:44 AM
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Some of the details depend on which of the three lights you want to be separately switched.
 
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