4-Way Switch

I would like to wire in a 4 way switch and am having a hard time finding a diagram that shows the same configuration I am faced with.

Power is coming into the middle switch (a 4-way) with the fixture feed coming off of one of the 3-way switches. All I can find are descriptions where the power comes in at one of the 3-way switches.

Does anyone know of a good source for this type of set up, or can talk me through the proper wiring?

Thanks,

abkent

 

That is not a hard one.
You need 14/3 from 4way to each 3way and 14/2 to the light from the 2nd 3way.
contect as follows. ( draw it first if it helps)

At the 4way
power in black to white to 3way#1. Color or tape white wire black.
Power in white to white from other 3way.
Black and red from 3 way#1 to one set of traveler screws on 4 way.
Black and red from 3way #2 to other set of traveler screws on 4 way.

At 3way#1
Connect white to common. Color or tape white black.
Connect red and black to travelers.

At 3way #2
Connect black from light to common of 3way.
Connect red and black from 4way to traveler screws of 3way.
Connect white from light to white from 4way.

At light
connect black and white to black and white of light.

Connect all grounds in all boxes.

 

Good show Joe! That'll work.