ZPG1200 Features: * Supplied with lights to check GM TBI, Bosch PFI, Ford TBI, GM PFI, Geo TBI and GM SCPI * Quickly, easily and economically test electronic fuel injection signals * 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