If you are joining multiple strips of tape lighting, you may need more wire than is included in the kits.
Four-conductor wire is required for connections involving color-controlled lighting, color-controller to lights and light to light.
This 22 gauge stranded four-conductor indoor-rated wire is supplied in a 26.2' (8m) roll in standard ribbon and in-wall rated formats. Flat ribbon wire is for use only in applications where the wires will not be hidden inside a wall.
Note that outdoor installations or those in wet locations, like shower enclosures, require the use of outdoor-grade connectors and wire, in addition to outdoor-grade lighting.