Feature●Product Name : Car Power Filter;Model : FQ-318●Color : Black, Yellow, Red, Silver Tone;Material : Plastic, Metal●Input Voltage : 12V;Total Length : 40cm / 15.7“●Body Size : 6.2 x 5.9 x 2.7cm / 2.4” x 2.3" x 1" (L*W*T);Net Weight : 197g●Package Content : 1 x Car Power FilterDescription
There are 3 wires.Red wire for input (12V), yellow wire for output and black wire is groundwire.The Car Power Filter will bring you a good audio effect.