Powerbuilt
Spark Plug Wire Tester
Quantity:
- Test spark plug wires in a snap
- Lights up when an electrical current is detected
- Precision built to meet or exceed ANSI standards
- Strong and dependable to last a lifetime
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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