Alltrade 648745 Kit 33 Deluxe Fuel Injection Test Noid Light Tool Set Makes it easy to diagnose and troubleshoot electronic fuel injection EFI systems or idle air control on most vehicles Kit includes 7 node lights and 2 GM IAC testers Includes node lights for: GM PFI, Ford TBI, Geo TBI, Bosch PFI, GM TBI, GM SCPI, GM Molted 2 Complete with fiber optic cable for use when lights aren't visible from passenger compartment Storage case includes usage instructions and photos Tool set for checking the presence of on-off signals at electronic fuel injection components Noid lights flash when signal is present Includes 8 fuel injection noid lights and 2 idle air control valve noid lights Storage case includes usage photos Kit 33 includes 10-Piece for checking for the presence of on-off signals at electronic fuel injection components