http://imgur.com/gallery/VYpZD2o Here's a better pic of the double gang.. I confirmed the black from the bottom on the right is the hot one connected to the box

@Bethel.8009 I'm going to give it another go this evening... I think what you've said makes sense to me. I have both a multi-meter and a non-contact voltage detector. I will take everything apart and...

@Ferinthul http://imgur.com/gallery/4wDwuZr A sketch of what the double and single gang box looks like.

@Bethel.8009 @B.Will Thanks for your replies. I thought i had some pictures from the original wiring... but i guess i didnt take them Here are some pictures of the two-gang box at the bottom of the...

I'm trying to wire the bottom and top of a stairwell light. 3-way conventional flicker switches were installed. I completed the wiring for the switch, hooking up the neutral of the wire from the...