Description

Astro Deluxe Noid Lite and GM AC Signal Test Lights Set quickly and easily checks for systems of GM TBI, Bosch PFI Ford TBI, GM PFI, Geo TBI and GM SCPI. It is the most economic way to check electronic fuel injection (EFI) signals. Normal voltage is indicated by flashing light which is visible from passenger compartment. To test, just disconnect the fuel injectors, plug the Noid Lite into injector wiring harness then crank the engine.