OTC 7828 Noid Light, GM SPCI
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$24.16
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OTC Tools OTC 7828 Noid Light, GM SPCI. Noid Lites are the fastest, easiest, most economical way to check electronic fuel injection signals. Simply disconnect the fuel injectors, plug the Noid Lite into the injector wiring harness, & crank the engine. Normal pulsing voltage is indicated by a flashing light, which is visible from the passenger compartment.