Connectors for WAC Lighting Lineā¢, LINEā¢ 2.0, and Straight Edge under cabinet fixtures. I-connectors are used to join two fixtures for a seamless end to end connection. Joiner cables are used to join one fixture to another on a single power source, available in four sizes, 6", 12", 24", and 36". Use an SL-IF custom extender to create longer runs of joiner cables. Y and X connectors are used to create three-way and four-way connections. 144" extension cable is used to supply power to fixture from a far power supply.