I replaced a switch (switch B in gang box 2 in the picture below) - now, the two 3-way switches don't exactly work as they should
I'm convinced i have two wires reversed on Switch B - but from this diagram below do you have enough information to tell me which ones?
The blue trapezoids indicate wires leaving the gang boxes but i can't be certain where they go without disconnecting leads one at a time
I don't know where exactly the wire(s) go from the light itself, it's in the ceiling and pretty hard to get to
i'm reasonably sure my setup goes: power source > switch a > lights > switch b - based only on the fact that there is only one 12/3 wire connected to switch b, and because switch a seems to be nutted to hot which feeds another (unrelated) switch
I'm not an electrician but i have replaced a lot of standard outlets and switches, moved breakers around in the panel, wired a 220v run from a new breaker to a dryer (first 3-way here though) and i'm only looking for advice, not going to take your suggestions as legally binding instruction. i understand this is the internet, information can be wrong especially not given all of the information, consult a qualified electrician, etc - just looking to see if an expert here can tell based on what i can see in the boxes, which wires might be reversed and if it's reasonably safe to switch them (power off, of course).
the positions of the switches and how they control the light, are like this:
D = switch toward traveller screws
U = switch toward common screw
SWITCH LIGHT STATE
A-U B-D off
A-U B-U off
A-D B-U on
A-D B-D off