The safe way to add electrical accessories to any vehicle is with a CirKit Boss. The first circuit isolator system available with both constant and ignition-hot circuit kits. Kits include an in-line circuit breaker, relay, relay/fuse block base with preterminated harness and mounting hardware and terminals. Protects your OEM and is easy to install. Provides seven ignition-hot circuits with a maximum total amperage handling of 80 Amps. This kit includes: Two weatherproof 40-amp SPST relays, Two weatherproof 40-amp circuit breakers, Weatherproof relay bases/fuse blocks with harness, Weatherproof crimp-on heat-shrinkable terminals, Weatherproof fuse block cover and mounting hardware.