Abstract: An electrical wiring channel is installed beneath a wallboard, and includes a wiring channel member, a wiring faceplate, and a baseboard. The electrical wiring channel can be retrofit into existing buildings, by removing existing molding, and removing a portion of the wallboard below level of the molding to leave a gap or recess within which the wiring channel member can be inserted. The wiring channel member is C-shaped and has a female fastener member with a bore therein for receiving a male fastener member of the wiring faceplate. A new baseboard can be adhered to the wiring faceplate. Additional variations can include a right-angled channel portion for use with interior wall corners, exterior wall corners, or with door frames.