The Draper ETGT 12V Glow Plug Tester is a diagnostic tool designed for rapid fault finding on diesel vehicle glow plugs without engine disassembly. This in-situ testing device connects directly to the vehicle's 12V battery to power and test glow plugs in their installed position, providing an accurate real-world assessment of their condition and performance. Ideal for motor mechanics and vehicle technicians working on diesel engines, this glow plug tester eliminates the time-consuming process of removing plugs for bench testing. The six-LED display provides clear visual indication of both glow plug condition and vehicle battery charge status, enabling quick diagnosis of common starting issues in diesel vehicles. The tester features a 140mm test probe with a 5mm diameter, connected via a 450mm probe lead for easy access to glow plug locations. Power connection leads measure 1,350mm in length, providing sufficient reach for most vehicle configurations. The compact unit measures just 140