Wire Specifications: The colors of wires stand for the wires of different relays (Available relay wires include: White, Green, Yellow, Black, Brown, and Blue). Please pay attention to the thickness of wires: Thin wires need to be connected to switches, and the thick wires need to be connected to the devices. As for the rest wires: Red wires are the positive poles of fuses and need to be connected to battery+. Grey wire is the other side of relay coils and needs to be connected to battery-. Type: 6-Way Automobile - Modified Fuse Relay Box Color: Black Material: ABS Package Contents: 1 * Car Fuse Relay Box Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.