How to de-pin/re-pin automotive connectors in 7 easy steps like a pigtail expert. Find the right tools, remove the front cap, release the catch, release and pull, insert the terminal/pin. Whether you are a DIY enthusiast or someone facing an electrical issue, understanding how to replace a pigtail connector can be invaluable. This article will walk you through the necessary steps and provide. A pigtail connector is simply a short section of wiring harness terminated with a specific plug designed to mate with a component, such as a sensor, light, or solenoid. These connectors frequently require replacement when the plastic housing becomes brittle and cracks, or the internal metal. This startling statistic highlights why mastering reliable techniques like pigtail installations is critical for safety and performance.