XtremepowerUS 11pc Electronic Fuel Injection Signal Noid Lite Tester Light set Perfect for DIY & auto garage Ideal to locate & isolate ECU signal faults Indicator light test for control signal from the vehicle ECU IAC Light Compatibility - square 4-pin connectors or GM 700 TBI/FPI with flat Noid Light Compatibility: GM TBI, GM FPI, GM SCPI, GM MULTEC 2, Bosch 2, Bosch PFI, Ford TBI, Geo TBI