A modular, lighted artificial tree that includes a base portion for supporting the artificial tree and a first tree portion. The first tree portion includes a trunk portion having a first end and a second end, and forms a trunk wall, the trunk wall defines a trunk cavity and a plurality of apertures. The first end of the trunk portion is configured to couple with the base portion. The first tree portion also includes a plurality of branches coupled to the trunk portion; a first tree portion power-supply wiring harness within the trunk cavity and extending from the first end of the trunk portion to the second end of the trunk portion; a first light string operably coupled to the power-supply wiring harness. The first wire and the second wire pass through a common aperture to electrically connect to the wiring harness.