I have an outdoor wall sconce with two candle style bulbs and two sets of wires for each candle. I want to replace this fixture with the new one which has only one light bulb. I don't really want to leave the extra set of wires in the junction box inside the wall. The question is: how to rewire two sets of wires into the one?
Legrand Wiremold surface conduit is made for that purpose. You stick a starter box over the existing light junction box, then run surface conduit to the location of your desired boxes, then fit surface mount boxes there. It does that while looking tasteful, no drywall work needed.
Make sure you put the junction boxes on joists so you have some meat to anchor into. Hanging lights can be heavy, and more to the point they can be struck accidentally. When that happens, you don't want it to tear the drywall anchors out of the drywall.
In the junction box, you should find three, four pairs of black/white wire:
- from the switch or panel
- to the switch (if it is a switch poop)
- on to the next fixture (if any)
- light 1
- light 2
When you open up the junction box it should be very clear which wires go to lights 1 and 2. Take pictures. Remove the wires to lights 1 and 2. Connect the wires from the new fixture to the place where the old light wires were connected. Do NOT change any other connections.
If your new fixture has screw terminals instead of wires then you'll reuse one of the old sets.
If you're not sure what to do, upload the junction box picture before disconnecting any wires.