Specific and FeaturesApplication: fit for most auto car vehicle or automobile Material: top quality ABS Plastic Color: Red + Black Connection System: 4-Wire Connection System, Red is for Positive side, Black is for Negative, Blue and Green are for the Switch; Function: to simulate the dump value sound of a turbo Condition: 100% brand new Warranty: one year warranty for any manufacturing defectPackage Includes1 x Car Fake Dump Valve Electronic Turbo 1 x Set of Mounting Accessories, gaskets brackets and nuts as picture showsInstallation Tips- connect the red wire to positive battery terminal; - conect black wire to negative terminal; - Blue Switch wires through fire wall to accelerator pedal; - Attach the micro switch to accelerator pedal; - Connected switch to the normally closed terminal and earth terminal on micro switch; - Push accelerator fully in, when releasing the speaker makes dump valve sound.Notice* Please allow 1-3cm error due to manual measurement, your understanding will be appreciated * Item color displayed in photos may be showing slightly different from the real object. * for any other needs, please feel free to contact us.