Automotive Insulation Piercing Test Clip, Automotive ECU Memory Saver, Automotive Fuse Buddy Tester ... , Automotive ECU Memory Saver, Automotive Fuse Buddy Tester, Automotive Insulation Piercing Test Clip, Automotive Painting Gloss Meter, automotive painting thickness meter ... any banana jack equipped lead into the back of the piercing test clip, Rotate the yellow or black jack to move ...