An electrical interconnection system for linear lighting including a first electrical harness having a first electrical connector with a first plurality of terminals, and a first plurality of electrical conductors electrically connected to respective first terminals. A second electrical harness includes a second electrical connector with a second plurality of terminals, and a second plurality of electrical conductors electrically connected to respective second terminals. The second plurality of terminals are similar in shape to the first plurality of terminals. The first and second electrical harnesses are configured for connection to a first and second linear light, respectively. An electrical coupler is electrically connected to both the first electrical connector and the second electrical connector and includes a first port and a second port which each have a plurality of coupler terminals complimentary in shape with the first plurality of terminals and the second plurality of terminals.