12V automotive relay, 4-pin SPST blade fuse, with heavy-duty 12 AWG wire for cars, trucks, and boats

Improved Design with Built-in Fuse: The 12V relay socket features a built-in 30A ATO/ATC blade fuse, eliminating the need for a separate fuse holder and making car wiring installation simpler and more economical.

SIMPLIFY WIRING WITH COLOR-CODED WIRE: The headlight relay has color-coded wires for easy and accurate connection: black (ground), red (VDC), white (trigger), blue (N/O output), ensuring quick installation with less confusion.

DURABLE CONSTRUCTION, MAXIMUM PERFORMANCE: Each 12V automotive relay is designed for high switching capacity (30A) and comes with a metal mounting bracket for secure and stable installation, perfect for car headlights, fans, wipers, etc.

EASY, CLEAN, AND SMALL INSTALLATION: Unique male and female slots Snap-on connectors on the edge of each socket allow all 12-volt relays to connect seamlessly, creating a professional and neat setup in your vehicle's electrical system. Versatile and reliable for a wide range of applications: ideal for car headlights, fog lights, windshield wipers, fans, starters, speakers, and more. This automotive relay wiring harness supports a wide variety of automotive electrical systems and accessories.