Simply the best built, best looking, hardest working, most affordable fuel pump wiring harness available. Parts included in kit: 30 Amp 12 VDC Automotive Relay, 30 Amp 12 VDC Circuit Breaker,20 overall length for full size vehicles, 10-gauge power and ground wires, 16-gauge trigger wire, self-tapping mounting screws, wire ties. Tools required for installation: electrical terminal crimping tool, 5/16 nut driver, electric drill.