Tools Powerbuilt | Powerbuilt Spark Plug Wire Tester 648429

For Easy Testing Of Spark Plug Wires. Inductive Design.Tester Lights Up When Electrical Current Is Detected.

-Fasten Alligator Clip End Of Spark Plug Wire Tester To Vehicle Ground

-Position Receptacle End Of Spark Plug Wire Tester Over Spark Plug Wire

-With Engine Running, Observe Clear Window In Spark Plug Tester

-Light Flashing Indicates Sound Wire

-No Flashing Light Indicates Unsound Wire Or Spark Plug Or Connection