Detailed Description: • Quickly, easily and economically test electronic fuel injection signals.
• Supplied with lights to check GM TBI, Bosch PFI, Ford TBI, GM PFI, Geo TBI and GM SCPI.
• Easy to use - just disconnect the wiring to the fuel injectors, install the Noid Light into the injector wiring harness and crank or start the engine to view the light pattern.