12 Way Black Quadlock Cover Automotive Electric Plug Backshell Cable Clamp 1-1355524-3 – TSVW12-12P-21BK High-Integrity Female Receptacle for Automotive & Marine Wiring Systems

When it comes to reliable electrical connectivity in vehicles, every component must perform under pressure. The TSVW12-12P-21BK is a 12-pin black female Quadlock connector designed as a precise counterpart to the TSVW12-12P-11BK male backshell, serving as a direct replacement for the 1-1355524-3 connector. Engineered for use in automotive audio systems, marine electronics, and off-road vehicle controls, this receptacle ensures stable, long-lasting connections in environments exposed to vibration, moisture, and temperature extremes. With its robust design and industry-compliant materials, it's a trusted choice for OEMs, repair specialists, and custom harness builders.

• Model TSVW12-12P-21BK

• Type 12-Pin Female Receptacle

• Housing Color Black

• Mating Plug TSVW12-12P-11BK

• Material PBT+GF15% or PA66+GF30%

• Terminal Options Copper Alloy / Brass / Phosphor Bronze

• Sealing Design Mat Seal with Cavity Diaphragm

• Retention System Wedge-Lock Mechanism

• Inspection Process 100% Pre-Dispatch Testing

• Compliance IATF 16949, ISO14001, RoHS

• Minimum Order 1,000 pcs

• Lead Time 2–15 Days

Precision 12-Pin Female Quadlock Housing for 1-1355524-3 Replacement

The TSVW12-12P-21BK is a high-quality female receptacle engineered to replace the 1-1355524-3 connector in automotive and marine applications. Designed to mate with the TSVW12-12P-11BK male plug, this 12-way black housing ensures secure, reliable connections for audio, power, and control signals. Its precision-molded cavity aligns perfectly with the male pins, minimizing contact resistance and maximizing signal integrity. Ideal for factory-installed infotainment systems or aftermarket upgrades, this connector offers plug-and-play compatibility and long-term durability.

High-Strength Thermoplastic Housing for Harsh Environments

Manufactured from either PBT+GF15% or PA66+GF30%, the TSVW12-12P-21BK features a glass-fiber reinforced housing that resists deformation, impact, and thermal stress. The black color not only provides a sleek, professional appearance but also enhances UV resistance and heat dissipation—critical for components installed in direct sunlight or near heat-generating systems. This makes the connector especially suitable for use in marine dashboards, off-road vehicle interiors, and industrial control panels exposed to extreme conditions.

Integrated Mat Seal for Superior Environmental Protection

Each terminal cavity is equipped with a pre-molded mat seal and elastomeric diaphragm that compresses around the wire insulation when Terminals are inserted. This creates a waterproof, dustproof barrier that prevents moisture ingress, corrosion, and contamination—common causes of intermittent faults and signal degradation. The sealed design ensures consistent performance in wet, salty, or dusty environments, including marine vessels, agricultural machinery, and all-terrain vehicles.

Wedge-Lock Terminal Retention for Vibration Resistance

To prevent terminal backout due to constant vibration, the TSVW12-12P-21BK employs a two-piece housing with a secondary wedge-lock system. After terminals are loaded into the primary housing, the wedge is inserted to lock them firmly in place. This dual retention mechanism eliminates the risk of accidental disconnection and ensures continuous Electrical Contact, even in high-vibration applications like engine bays or rough terrain driving.

Flexible Terminal Compatibility for Custom Wiring Solutions

The connector supports copper alloy, brass, and phosphor bronze terminals, offering flexibility in conductivity, cost, and mechanical strength. It is compatible with standard automotive crimping tools and widely used in both OEM manufacturing and aftermarket repairs. Whether building a custom audio harness, replacing a damaged receptacle, or upgrading a factory system, this female housing provides a reliable foundation for professional-grade installations.

Complete Connector Pair with Male Plug TSVW12-12P-11BK

This female receptacle is specifically designed to mate with the TSVW12-12P-11BK male backshell, forming a fully sealed and mechanically stable connection. Together, they create a robust interface for transmitting audio signals, power, and control data in automotive and marine electronics. As part of a scalable Quadlock series, these connectors are available in various pin counts and housing colors (black, white, green, brown), enabling color-coded wiring schemes and modular system design.

Applications in Automotive, Marine, and Off-Road Sectors

Typical uses include:

• Direct replacement for 1-1355524-3 in car stereo and infotainment units

• Repair and retrofitting of factory audio harnesses

• Marine radio, GPS, and entertainment system wiring

• Control module connections in UTVs, ATVs, and farm equipment

• Custom cable assemblies for OEM and aftermarket brands

Its sealed, vibration-resistant design makes it suitable for both protected cabin environments and exposed outdoor installations.

OEM & ODM Support with Custom Mold Development

We offer full customization services, including private labeling, unique pin configurations, and dedicated mold creation. Our engineering team works closely with clients to deliver tailored connector solutions that meet exact technical, aesthetic, and regulatory requirements. With fast tooling turnaround and scalable production capacity, we help businesses launch branded, high-performance products efficiently and competitively.

Quality Assured and Globally Compliant

All units undergo 100% inspection before dispatch, including continuity testing, visual checks, and verification of seal integrity and lock engagement. Certified to IATF 16949 (automotive quality management), ISO14001 (environmental responsibility), and RoHS (restriction of hazardous substances), our products meet stringent international standards, ensuring safety, reliability, and compliance for global markets.

Fast Delivery and Technical Assistance Available

With a minimum order quantity of 1,000 pieces and delivery times ranging from 2 to 15 days, we support rapid fulfillment for distributors, manufacturers, and service providers worldwide. For product samples, technical drawings, or application support, contact our sales team at mandy@tscn.com.cn for prompt and professional assistance.

About TSCN – Trusted Manufacturer of High-Performance Connectors

Zhejiang Tongsheng Electronic Co., Ltd. (TSCN) is a leading supplier of automotive and industrial electrical connectors. With over 25 years of expertise, we deliver durable, precision-engineered components that ensure reliable connectivity across a wide range of demanding applications.

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