TESTING YOUR EFI SYSTEM: This Alltooetools Noid Light/IAC Test Kit allows you to easily eliminate a vehicle's electrical system as a possible cause when it won't start; Just disconnect the electrical harness from the injector, plug in the correct noid lite with or without an extension, and crank the engine for a few seconds; A flashing light indicates a correctly functioning electrical system, while a solid light indicates a malfunction.
