One position of a 4way feeds straight through II , The second position feeds
through in an X pattern. If you wired it wrong, you'd still make a circuit
in the X pattern, so depending upon your 3 way positions you could still get
a light


"Terry" wrote in message
news
On Sat, 26 Jan 2008 12:47:57 -0500, "RBM" wrote:

In addition to what S. Barker said: Assuming you noted the "common"
terminal
on each three way and transferred the wires to the new switches correctly,
your problem is likely at the 4 way. The in and out terminals won't
necessarily be located in the same position from switch to switch. You'll
have 4 wires on that switch. Each pair of wires will come from different
cables. One set goes to the input and one set to the output which will be
marked on the back of the switch, maybe!!


I was thinking about how a 4-way is wired. You wire it in pairs so,
even though 4-way has 4 wires and 4 screws, you still have a 50-50
chance to wire it correctly.

With a 3-way, on the other hand, you only have a 1 in 3 chance of
getting them right.

Also, if you screw up the 4-way nothing will work. If you get it
right, then one of the 3 ways will work.

So the OP must have had the 4-way correct.