OTC 3054C Noid Lite/IAC Test Kit with Harness Extension Simplest method for eliminating the EFI system or idle air control as possible faults on no-start vehicles Disconnect the fuel injectors, plug in a Noid Light and crank the engine. A flashing light indicates normal pulsing voltage Includes a molded plastic case and harness extension that allows for convenient remote viewing from the driver's seat GM PFI, Ford TBI, Geo TBI, Bosch PFI, GM TBI, GM SCPI, Bosch 2 and Multec 2, and GM IAC 8 Piece set