Locate And Isolate ECU Signal Faults Fast. Noid And Idle Air Control Valve Indicator Lights Test For Control Signal From ECU. Set Includes 1.2mtr Fibre Optic Cable To Allow Light To Be Viewed From The Drivers Seat. Simply Disconnect Harness And Plug In Appropriate Light To See If The Component Is Being Fed A Trigger Signal. Simple To Use And Has A Wide Vehicle Application. IAC Light Compatibility: 700 TBI/FPI With Flat Or Square 4-pin Connectors, Weight: 1.2235655541 pounds, Manufacturer: Jaywool