Purpose and key benefit Back-probe set designed for accurate electrical diagnosis in automotive systems without compromising wire integrity. Ideal for professionals and automotive enthusiasts who need precise measurements without cutting or damaging harnesses. What it does and how it helps Allows secure access to connector pins and sealed terminals for voltage, continuity, and signal checks while leaving insulation intact. Reduces rework and wiring damage compared with cutting or piercing leads. Flexible probe tips are shaped for round and weatherproof connectors, making it easier to reach recessed pins and tight spaces common in modern vehicles. Important attributes Function: back probes/test leads for accessing connector pins and terminals during diagnostic procedures. Compatibility: works with common automotive round and weatherproof connectors and standard multimeters/testers. Performance: built with a high rating and temperature tolerance so the leads maintain performance under automotive operating conditions. Durability: flexible probes tolerate repeated use in workshop and field environments without loss of contact reliability. Preservation of wiring: designed to probe circuits without altering or weakening wire insulation or connector seals. Practical uses (real scenarios) On-vehicle sensor diagnostics: back-probe oxygen, MAP, TPS, or injector connectors to verify voltage or signal waveforms while the system is running. Weather-sealed connector checks: access pins on sealed connectors after rain or roadside exposure without cutting boots or terminals. Workshop troubleshooting and ECU testing: inspect harness continuity and pin voltage at bulkhead or ECU connectors while preserving factory wiring for reassembly. Why you should choose this set Combines precise access to pins with flexibility and temperature tolerance so you can perform reliable diagnostics in garages, workshops, or roadside repairs. Essential addition to automotive test equipment for technicians who need repeatable, non-destructive measurements in varied environments.