Thank you for viewing! This is a reinforced relay harness for vehicles that require long wiring, such as large vehicles, wagons, and minivans. "The fuse blew after I replaced my fog lights with bright LEDs..." "Even after replacing the fuse, it blows repeatedly..." With this product, such unforeseen circumstances can be resolved in an instant!! This is a power-boosting relay harness to solve fuse blowing when replacing LED fog lights. Because it can supply current directly from the battery, it allows you to install high-output, bright LED fog lights. This is a product we recommend only to those who want to use LED bulbs safely and for a longer time. For large vehicles such as Alphard, Vellfire, Harrier, Hiace, Caravan, Elgrand, Serena, Step WGN, Freed, Delica, and more! *This is for H16 shape. *Please check the wiring diagram in the product page images when installing.