JK, this is one of the most difficult electrical configurations
possible. What makes this complicated is that there are 4 possible
ways in which this circuit is wired. Here is a link that shows you the
4 possible wiring diagrams (ignore the information on 'X10' systems.
Caution: ALWAYS SHUT OFF THE BREAKER/ FUSE FOR THE CIRCUIT , AND test
for voltage with either a voltmeter, tick-tester, or a neon tester
BEFORE you open up any electrical box
The circuit will only work correctly if BOTH of the switches are truly
'3-way' switches. When you look at the switch, a 3-way will have 3
screw terminals. Two terminals screws are the same color--these will
be for the 'traveller' wires (usually black and red, but not always),
the odd-colored terminal is for the common wire, (usually black or
white with back tape applied).
I suspect that either one of your switches has been replaced by a
regular switch instead of a '3-way', or the traveller wires have gotten
I can't tell your DIY ability from your post, JK. If you are not
comfortable and do not have a good understanding of electrical theory,
please call in an electrician.
If you want to tackle this yourself, buy a good book and do some
research, as was suggested above.
I would recommend you try reversing the black/red wires at one switch,
restore power and test both switches. If both switches do not control
the light, then reverse the wires back. Go to the other switch and
reverse the black/ red wires, and restore power/ test again.
If you still don't get this working, go to
http://www.selfhelpforums.com/forumdisplay.php?f and post your
question with the exact configuration of every wire at each switch and