Glow Plug Tester provides fault detection thru LED's for a quick analysis of short circuit, over current, normal operation, and open circuit/under current
Glow Plug Tester allows for testing without removing glow plug from the engine
Tester powers the glow plug to test it in it's operating state for a 'real world' analysis
Provides much greater accuracy 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; molded plastic storage case included