Both 30 and 20 amp relay fuel pump wiring kits and harnesses have auto-reset style integrated circuit boards that help ensure any electrical shorts are remedied. Each kit includes a pre-wired relay receptacle with 80" of red wire for activation (12 gauge for 20-Amp Relay Kit and 10 gauge for 30-Amp Relay Kit) and 80" of 10 gauge black wire for a high current ground circuit, an Amp relay, circuit breaker with mounting tab, crimp terminals and mounting hardware.