Relay Wiring kit using high quality copper wiring, crimped, heat shrinked terminals, inline Blade fuse holder with fuse ready to go. They come with a Bosch 30A Relay with quality Bosch connector plug. These kits are perfect to use with W2A system water pumps and thermatic fan systems.,Relay Wiring kit using high quality copper wiring, crimped, heat shrinked terminals, inline Blade