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Posted by Jim Busbin on November 30th, 1997 11:51 PM
In reply to 3 way switch wiring by Don DePriest on November 28th, 1997 06:25 PM [Go to top of thread]


There are several ways to approach this but first,
I want to be sure we are talking about a lighting
circuit involving only two switches - not more
than two. Second, I need to know if you saved the
old switches and third, if you do not still have
them, do you own a multi-meter (or volt-ohm
meter)? Also, since this is a hallway, is there
more than one fixture controlled by these

The problem is with the wiring on the switches.
What will happen, at times, is you'll replace
each wire, wire for wire, on the new switch as it
appeared on the old. The key in this is one of
the three terminals on each of the switches that
is marked "Common" or "COM". The terminals on the
old and new switches may appear to be the same
but in actuality all manufacturers do not place
their "COM" terminals in the same location. That's
why I need to know if you have your old switches
or if you still have a 3-way switch located
elsewhere in your house of the same vintage and
manufacturer as the ones you replaced. If you do
have another located elsewhere in the house, don't
do anything with it yet, just let me know if there
is one. I'll be glad to try and walk you through
this problem but I'll need to hear from you
concerning the above assumptions and questions.

Talk to you later,


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