Thanks to those who last time provided great information that I used
to correct all my 3-way light circuit switches. They all work fine.
Except ONE. It appears to be a simple hall ceiling light with a 3-way
switch on each end.
Here's what I found: one end had 4 wires coming in, the other the
standard 2. The 4 wire end as 2 reds and 2 whites and the blacks are
connected external to the switch. I've tried to use the diagnostic
techniques discussed here and after trying a zillion combinations I
still can't get them to work.
If I remember correctly (stupid me - I didn't take a photo) the two
red wires would connected to the same terminal while the other two
whites were each connected to a separate terminal.
I am hoping that some industrious electricians can help me figure this
out as it is the very last switch not functioning in the entire house.
On 5/23/2012 10:57 PM, firstname.lastname@example.org wrote:
When you say "wires", I think you mean cables. Wires are individual
conductors. You'll need to identify the cables at each end of the
circuit to proceed. It would make sense to have a 2 wire and a 3 wire
cable at one end of the circuit. The other end of the circuit with 4
cables, probably has the feed into the circuit and a couple of taps,
feeding other lights or outlets. Once you identify what each cable is
doing, or going, it'll be easy to connect the 3 way part of the circuit
And figure out where the various wires go.
For example, with everything
disconnected one cable should be be supply and
now you can mark it. You can buy a circuit tracing
tool that puts a signal on the wires if you need to.
Then compare what you have to the online
schematics that show how 3 ways are wired.
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