Check 6 and 12V circuits for voltage and spark plugs for spark. To use, ground the clip and touch the probe to the point being tested. The tester bulb will light if voltageis present. To use as a spark tester, screw theprobe into the opposite end of the handle.

Warning: This product may expose you to chemicals including lead which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov