Wiring connectors provide secure, low-resistance electrical connections within a vehicle’s wiring harness. Commonly found throughout the powertrain, chassis, body, and accessory systems, they join two or more conductors without permanent soldering. These connectors utilize polarized housings and locking features to ensure proper mating and prevent accidental disconnection. Current designs incorporate sealed interfaces to protect against corrosion and environmental factors, and feature a variety of terminal types for differing wire gauges and amperage requirements. Materials generally consist of thermoplastic housings and tin-plated or nickel-plated copper alloy terminals to maximize conductivity and durability.