Description This kit includes: SPST 40 Amp relay 30 Amp circuit breaker Relay base with harness (6′ input, 4′ output) Crimp-on terminals Mounting hardware This is inexpensive protection for an electric fan and a vehicle’s wire harness. Provides constant voltage, protects from voltage and amperage spikes, and prevents the fan from back-feeding voltage through the vehicle’s wire harness. An absolute necessity if adding a dash mounted manual on/off switch to your electric fan circuit.
