3-way switch with only one switch having neutral wire

[kreddad (Reddad)]

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3-Way Switch Wiring Leviton DZ15S-1BZ & DD0SR-DLZ

So I took the fixture down this evening and snapped the following pics. [IMG_20171102_193426][IMG_20171102_193451] The only wires going into the fixture are a hot and neutral. The insulation (grey) on these wires match the insulation going out of my 3-gang panel. You can see them here. [IMG_20171101_210612] So I finally think I have figured out what is going on. If you look closely at the picture above, in the center of the box there is actually 4 sets of wires with white insulation coming into the box, in addition to the grey insulated wires that go out to the fixture. The one set of white insulated wires has a black wire pigtailed to three more black wires that go to each switch. On the main 3 way switch this connects to the terminal marked common. Multimeter confirmed this wire as b…