Improved Version - Automotive relays incorporated into the fuse holder with 30A blade fuse included, no need for a separate fuse holder, saving space and money. Heavy-duty 14AWG wires for main contact Easy Wiring - Relay sockets come with different color wires for convenient wiring of loads/accessories. Black - Ground (85), Red - VDC (30), White - Trigger (86), Blue - N/O Output (87) Neat Mounting Design - The unique male-female slot interlocking design on each socket edge makes it easy to connect all relays together, providing a clean and tidy installation Good Construction - 12VDC (Max14VDC) and 30A high switching capacity. Bosch style 4-pin SPST relay. The metal mounting bracket on the electrical relay makes installation easy Wide Application - Wide range of use, widely used for car headlights, fog lights, wipers, starter, fans, speakers, traction control systems, etc. The fuse holder built into the automotive relay eliminates the need for a separate in-line fuse holder, saving