Jumper wires provide access for testing all components using either Micro-Pack or Metri Pack connectors on GM vehicles 1985 and up.Enables a technician to `T` volt/ohmmeter into harness for diagnosing computer and sensor problems.10 color-coded jumper wires are included to help identify terminal connections (5 for Micro-Pack and 5 for Metri-Pack).12-in. test leads allow easy attachment of test equipment.Thexton 392 GM Micro & Metric Pack Jumper Wire Set