Petrol Engine Timing Light Strength Resistant 12V Digital Ignition Timing Light for Car Motorcycle Marine Wide Compatibility: 12V ignition light is for cars, automobiles, motorcycles, ships, all 2 and 4 stroke engines, easily operated on a 12V ignition system.Accurate Measurement: Designed to retime your car's ignition for performance, the ignition timing can be accurately measured.The ignition advance angle ranges from 0 degrees to 60 degrees, and the engine speed range is displayed from 0 rpm to 9000 rpm.Advance Function: Detect the ignition timing scale on the engine flywheel or pulley for appropriate adjustment.Detect the knock suppression control system and vacuum advance angle control system, and change the advance angle with the change of vehicle speed.Clip Design: Two red and black clips distinguish between positive and negative electrodes, easy to use and safer.It is a sliding clip pickup for easy and secure connection.Clamp the voltage wire clamp on the cylinder voltage wire, and the arrow on the clamp points to the direction of the spark plug to work normally.Operating Voltage: 12V.Correctly adjusting the timing in turn helps that your engine is working with power and efficiency.Ergonomic Design: Handle design in line with engineering principles, with comfortable buttons and good tactile feedback for easy.Material: Impact resistant ABS housing with replaceable collets.Digital Display: Digital display key panel, simple and easy to operate.: Suitable for cars, motorcycles, personal boats, motorhomes, aircraft, carts, lawn mowers, and other petrol engines.Accurate ignition timing lights are necessary to optimize fuel economy and performance from the ignition engine.Advanced timing and auxiliary functions allow users to view the timing curve of vacuum, mechanical, or computer control.The engine may need to be adjusted or checked with a vacuum source at a specific engine speed or under certain conditions.Compatible with 6 volt or 12 volt positive or negative ground systems.For 12 Volt Positive Ground System: Connect the red test lead to the positive terminal and the black lead to the negative terminal.Use jumpers of at least 18AWG.Connect the black clip to the negative terminal and attach the red clip to a safe engine ground such as the alternator bracket or engine block.Avoid using positive terminals or fuel system components as connection points.Timing Engine Preparation: Follow the instructions on the vehicle exhaust control label located under the hood.Common locations include the lower part of the hood, leaf plate, inside the hood, or hood lock.If the label is missing, consult the appropriate vehicle or engine maintenance manual for testing procedures.Note that preparation processes vary between engines.