The Sealey 11 Piece Noid and IAC Test Light Set is a professional diagnostic tool designed for locating and isolating ECU signal faults quickly and accurately. This comprehensive testing kit enables automotive technicians and mechanics to diagnose fuel injector and idle air control valve issues by verifying whether components are receiving proper trigger signals from the engine control unit. The set provides a straightforward diagnostic process - simply disconnect the harness connector and plug in the appropriate test light to instantly determine if the ECU is sending control signals to the component. This eliminates guesswork when troubleshooting no-start conditions, rough idle, or poor engine performance related to fuel delivery or idle control systems. A key feature of this diagnostic set is the 1.3m fibre optic cable, which allows the test light to be viewed from the driver's seat during testing. This enables solo diagnostics where the technician can observe signal behaviour whilst