Check the listing for details. Car Power Filter EMI Noise Ground Loop Isolator Suppressor for Auto Stereo Au.... Condition: New. Listed at 23.72 USD. Car Power Filter EMI Noise Ground Loop Isolator Suppressor for Auto Stereo Audio Radio Stereos Amplifier Amp Speaker Equalizer Subwoofer 12V Product Details Item dimensions L x W x H: 2.52 x 1.69 x 0.98 inches Voltage: 12 Volts Manufacturer: EKYLIN Maximum Supply Voltage: 12 Volts Mounting Type: Surface Mount Product Dimensions : 2.52 x 1.69 x 0.98 inches; 6 ounces Item model number : FLT-318 Date First Available : May 28, 2019 Manufacturer : EKYLIN Customer Reviews: 3.9 3.9 out of 5 stars 514 ratings Item dimensions L x W x H: 2.52 x 1.69 x 0.98 inches Voltage: 12 Volts Manufacturer: EKYLIN Maximum Supply Voltage: 12 Volts Mounting Type: Surface Mount Brand: EKYLIN Number of Channels: 1 Item Weight: 6 ounces Product Dimensions: 2.52 x 1.69 x 0.98 inches Item model number: FLT-318 Date First Available: May 28, 2019 Car power filterIt can eliminate the EMI/Ground Loop interference in the power source caused by the other car electronics or ignition. Especially good for car audio, sensitive electronic equipment, etc. Size: 2.5 x 1.7 x 0.1 inch. Wiring Length:7.5 inch. Reduce Audio Noises Filtering the power supply can reduce noise generated by the cigarette lighter or the other electronics. Get crystal clear sounds from the car speakers. How to connectThe red wire connects to the battery 12v+, the yellow wire connects to the power cable of the stereo where the electricity is going. The black wire connects to the vehicles metal frame or any available ground wire. Max Compatibility Professional power filter for most of DC 12V devices. Effectively resolve the noise problem of car audio. Compatible with car stereos receivers, equalizers, amplifiers, speakers, etc. Reliable and Friendly ServiceReady to respond within a 24 hour time frame. 30-Day money back guarantee, 12 month replacement and lifetime Support.