Connectors For Wac Lighting Line, Line 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