6/12/24 Volts Heavy Duty Automotive Logic Probe A modern circuit tester with time tested durability. Quickly and safely tests high and low voltages (power and ground) on all vehicles, including computerized engine and body controls. . Tests 6, 12, and 24 volt systems . High impedance - current draw less than 18 milliamps to protect sensitive electronic sensors, microprocessors, electronic ignition components and air bags. . Dual color LED indicates red for power (high) and green for ground (low) . 6' heavy duty, 18 gage dual leads with large battery clips . Leads can be attached regardless of polarity . Includes Protect-A-Terminal probe adapter to prevent damage to electrical connectors . Can be used as a standard, single circuit tester. . Instructions included. 28100 Yes - LEAD