In precision electronics manufacturing and the automotive industry, wiring harnesses are often referred to as the "nervous system" of equipment. Even the most advanced control units can face system failure if a single microscopic break or high-impedance node exists within their connection paths. Continuity testing, as the fundamental method for verifying electrical connection integrity, holds undeniable importance.As a professional wiring harness manufacturer, JinHai firmly believes that continuity testing should transcend mere "pass/fail" detection to become a deep validation of "connection quality." This article delves into the technical intricacies, industrial standards, and real-world applications of continuity testing within complex manufacturing environments.