09:27AM | 02/19/05
Member Since: 02/18/05
3 lifetime posts
I am trying to install a progamable light switch in an older home. When I took the old switch out, all I found were two black wires and no sign of the whites...could they possibly be connected behind the box? I have lath and plaster and the box appears to be plastered into place, so taking it out will be a problem. I also have some knob and tubing wiring in that section of the house. I need a white wire in order for the new switch to work...any ideas?



02:38PM | 02/20/05
Member Since: 09/17/02
524 lifetime posts
It is probably a switch loop. That means there is no neutral wire in the box. This is very common for switch wiring.


06:15AM | 02/22/05
Member Since: 02/18/05
3 lifetime posts
Do you have any suggestions as to how I should wire the new switch? Can I just leave the neutral disconnected??


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