Locate and isolate ECU signal faults fast. Noid and idle air control valve indicator lights test for control signal from ECU. Simply disconnect harness and plug in appropriate light to see if the component is being fed a trigger signal. Set includes 1.3m fibre optic cable to allow light to be viewed from the driver's seat. Simple-to-use and has a wide vehicle application. Features & Benefits:Locate and isolate ECU signal faults fast.Simply disconnect harness and plug in light to see if component is receiving a signal.Noid and idle air control valve indicator lights test for control signal from ECU.1.3m Fibre optic cable allows light to be viewed from the drivers seat. Model No. VS2131 Specifications: Model No VS2131 Brand: Sealey Nett Weight: 0.41kg Noid Light Applications: GM TBI, GM SCPI, GM FPI, GM MULTEC 2, Bosch 2, Bosch PFI, Ford TBI, GEO TBI IAC Light Applications: GM 700 TBI/FPI with Flat or Square 4-pin Connectors