Specific and Features: Application: fit for most auto car vehicle or automobile Material: top quality ABS Plastic Color: Red + Black Size (Approx.): Height: 4.13" (10.5cm) / Diameter: 3.94" (10cm) Connection System: 4-Wire Connection System, Red is for "+" side, Black is for "-", Blue and Green are for the Switch; Function: to simulate the dump value sound of a turbo Condition: brand new Warranty: 2 Years warranty Package Included: 1 x Dump Valve Electronic Turbo 1 x Set of Mounting Accessories, gaskets brackets and nuts as picture shows Installation Tips: 1) connect the red wire to battery terminal "+"; 2) conect black wire to terminal "-"; 3) Blue Switch wires through fire wall to accelerator pedal; 4) Attach the micro switch to accelerator pedal; 5) Connected switch to the normally closed terminal and earth terminal on micro switch; 6) Push accelerator fully in, when releasing the speaker makes dump valve sound. Note: * Please allow 1-3cm error due to manual measurement, your