Get rid of that annoying hum
American International's S-10A noise filter helps to eliminate noise that comes in through the 12-volt power line on your in-dash receiver or signal processor. Installation is simple. You have three wires to connect: one to the power line from the battery, one to the receiver's power line, and one to ground. The S-10A noise filter is recommended for audio components rated up to a total of 10 amps and 150 watts. Mounting hardware is included. Dimensions: 2-13/16"W x 1-1/2"H x 1-7/8"D. Warranty: 1 year.