1 NOISE FILTER 10 AMP 12V HUM ENGINE SUPPRESSOR AUDIO CAR POWER WIRE IBNF10
RED: 12V INPUT (POWER SOURCE). THIS IS FOR (1) 10 AMP POWER WIRE NOISE FILTER. BLUE: 12V OUTPUT (THE DEVICE YOU ARE FILTERING). FOR FILTERING 12 VOLT CAR AUDIO PRODUCTS THAT HAVE INCLUDED NOISE FROM ALTERNATOR OR OTHER IGNITION SOURCES.