Glow Plug Tester provides fault detection through LED's for a quick analysis; Short Circuit, Over Current, Normal Operation, Open Circuit/Under Current. • Glow Plug Tester allows for testing without removing glow plug from engine. • Powers the glow plug to test the plug in it's operating state. • Test much more accurate than a cold resistance test, which can miss short circuits. • Tester uses a current measurement to accurately determine proper operation and check for short circuits.
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