Features: 1.This Turbo boost gauge's measuring range is 0-200Kpa 2.Stainless steel shell with glass top 3.DC 12V power supply 4.Comes with firm mounting bracket and wires 5.Suitable for autos, racing cars Specification: Features: _x000D_ This Turbo boost gauge's measuring range is 0-200Kpa. _x000D_ Stainless steel shell with glass top. _x000D_ DC 12V power supply. _x000D_ Comes with firm mounting bracket and wires. _x000D_ Suitable for autos, racing cars. _x000D_ _x000D_ Specifications:_x000D_ Material: Stainless steel shell + glass top_x000D_ Body Color: Black_x000D_ Backlight Color: As the Picture Shown_x000D_ Working voltage: DC 12V_x000D_ Size: Approx. 8 x 7 x 6cm/3.15'' x 2.75'' x 2.36''_x000D_ Package Weight: Approx. 340g_x000D_ _x000D_ Wiring Method:_x000D_ A Set of 4 Wires:_x000D_ 1. Red wire connects + 12V power supply._x000D_ 2. White wire connects the headlight switch + 12V._x000D_ 3. Yellow wire connects the ignition switch._x000D_ 4. Black wire connect the storage battery or car shell._x000D_ A Set of 2 Wires:_x000D_ 1. Green wire connects turbo boost sensor line._x000D_ 2. Black wire connects the ground wire._x000D_ (The last wire is a spare one for similar item connection.)_x000D_ _x000D_ Back Sockets Instruction:_x000D_ 1. 2-pin socket links to external warning light(this item not includes the warning light)_x000D_ 2. 3-pin socket adapts to signal line._x000D_ 3. 4-pin socket is for battery connection. (When there are two 4-pin sockets, you only need to choose one to connect the power, and the rest socket is ready for other similar item without linking the power again.)_x000D_ _x000D_ Package List:_x000D_ 1 x Boost Gauge with Bracket_x000D_ 1 x Set of Installation Accessories_x000D_ _x000D_ Note:_x000D_ Easy to install but professional installation is highly recommended. PackageList: