12 Way White Quadlock Cover Automotive Electric Plug Backshell Cable Clamp 1-1355524-3 – TSVW12-12P-21WT Sealed Female Receptacle for Vehicle Audio & Control Systems

Modern vehicles demand reliable, high-integrity electrical connections—especially in audio, infotainment, and control modules. The TSVW12-12P-21WT is a precision-engineered 12-way white female Quadlock backshell designed as a direct functional replacement for the 1-1355524-3 connector. Built for durability and consistent performance, this automotive-grade plug cover serves as a critical component in factory and aftermarket wiring systems for cars, yachts, UTVs, and off-road equipment. With its robust thermoplastic housing, secure terminal retention, and full environmental sealing, it ensures long-term reliability in dynamic and challenging operating conditions.

• Model TSVW12-12P-21WT

• Connector Type 12-Pin Female Backshell

• Housing Color White

• Mating Plug TSVW12-12P-11WT

• Housing Material PBT+GF15% or PA66+GF30%

• Terminal Type Copper Alloy / Brass / Phosphor Bronze

• Sealing Integrated Mat Seal & Cavity Diaphragm

• Retention Wedge-Lock Two-Piece Housing

• Quality Control 100% Pre-Dispatch Inspection

• Certifications IATF 16949, ISO14001, RoHS

• Minimum Order 1,000 pcs

• Delivery Time 2–15 Days

White 12-Way Female Quadlock Backshell for 1-1355524-3 Replacement

The TSVW12-12P-21WT is a high-performance female receptacle engineered to replace the 1-1355524-3 connector in automotive Electrical Systems. Its white housing offers a clean, modern appearance and serves as a visual identifier to differentiate it from other color-coded connectors in complex wiring harnesses. This 12-pin configuration supports a full range of audio, power, and control signals, making it ideal for factory stereo upgrades, aftermarket installations, and repair of vehicle infotainment systems. Designed for plug-and-play compatibility, it ensures seamless integration without the need for modification.

Engineered for Harsh Automotive Environments

Automotive Connectors must endure constant vibration, temperature fluctuations, moisture, and chemical exposure. The TSVW12-12P-21WT is built to withstand these challenges with a reinforced thermoplastic body made from either PBT+GF15% or PA66+GF30%. These materials provide excellent mechanical strength, heat resistance, and dimensional stability. The white housing also offers UV resistance, making it suitable for installations in sun-exposed areas such as dashboards or marine control panels, where prolonged sunlight could degrade lower-grade plastics.

Advanced Sealing System for Dust and Water Resistance

Each terminal cavity features a pre-installed mat seal and cavity diaphragm that compresses tightly around the wire insulation upon insertion. This creates a waterproof and dustproof barrier that prevents moisture, salt spray, and debris from entering the connector body. The sealing system is critical for preventing corrosion, signal loss, and intermittent failures—common issues in marine, off-road, and high-humidity environments. This level of protection ensures long-term reliability and consistent performance across diverse operating conditions.

Wedge-Lock Design for Secure Terminal Retention

To combat terminal backout caused by vibration and mechanical stress, this connector uses a two-piece housing with a secondary wedge lock mechanism. After Terminals are inserted into the primary housing, the secondary wedge is slid into place, locking all contacts firmly. This dual retention system enhances durability and prevents accidental disconnection, even under continuous engine vibration or rough terrain driving. The result is a stable, maintenance-free connection that maintains electrical continuity over time.

Universal Terminal Compatibility for Flexible Wiring Solutions

The TSVW12-12P-21WT supports a range of terminal materials—copper alloy, brass, and phosphor bronze—allowing users to select based on conductivity, cost, and mechanical requirements. Its design is compatible with standard crimping tools and widely used in both OEM production and aftermarket repairs. Whether you're replacing a damaged connector, building a custom harness, or upgrading a factory audio system, this backshell provides a reliable and versatile solution for professional installers and DIY technicians.

Complete Connector Pairing with Mating Male Plug

The TSVW12-12P-21WT mates perfectly with the TSVW12-12P-11WT male plug to form a fully sealed, secure connection ideal for audio, sensor, and control circuits. This pairing ensures reliable signal transmission and mechanical stability in demanding applications. As part of a broader Quadlock series, this connector is available in multiple pin counts and housing colors (white, black, green, brown), enabling flexible system design and color-coded identification for easier assembly and service.

Applications in Automotive, Marine, and Off-Road Vehicles

Common uses include:

• Replacement for 1-1355524-3 in car audio and infotainment systems

• Factory harness repair and retrofit installations

• Marine navigation, radio, and entertainment wiring

• Control modules in UTVs, ATVs, and agricultural machinery

• Custom cable assemblies for OEMs and aftermarket brands

Its rugged construction and environmental protection make it suitable for both indoor cabin installations and exposed outdoor environments.

OEM & ODM Services with Custom Mold Development

We provide comprehensive customization options for manufacturers and brands, including private labeling, unique pin layouts, and dedicated mold creation. Our engineering team offers full support from design and prototyping to mass production, ensuring every custom connector meets exact technical, aesthetic, and regulatory requirements. With fast tooling development and scalable manufacturing, we help businesses deliver high-quality, branded connectivity solutions efficiently and cost-effectively.

Quality Assured and Compliant with International Standards

Every unit undergoes 100% inspection before shipment, including continuity testing, visual checks, and verification of seal and lock engagement. Certified to IATF 16949 (automotive quality), ISO14001 (environmental management), and RoHS (hazardous substance compliance), our products meet the highest global standards for safety, reliability, and environmental responsibility—giving customers confidence in every order.

Fast Turnaround and Global Support

With a minimum order of 1,000 pieces and delivery times of 2–15 days, we support rapid fulfillment for distributors, installers, and manufacturers worldwide. For product samples, technical drawings, or inquiries about connector replacements, contact our sales team at mandy@tscn.com.cn for prompt and professional service.

About TSCN – Delivering Reliable Connectivity for Demanding Industries

Zhejiang Tongsheng Electronic Co., Ltd. (TSCN) is a trusted manufacturer of high-performance automotive and industrial connectors. With over 25 years of experience, we specialize in durable, precision-engineered solutions that power reliable systems across global markets.

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