Description: Universal, Works on all makes and models Adjustable set value; Set alarm separately Works with all cylinder gasoline engines, such as 4, 6 & 8 Cyls Eye-Catching and fashionable red light; Comes with bolted mounting stand Can aid the driver in making accurate shifts for best performance Specification: Lens Material: Plastic Housing Material: Aluminum Case Color: Black Light Color: Red Voltage: 12V 1000 to 11,000 rpm shift point Connection: Green Wire Should Be Connected To The Motor Signal Line Size:4.5" (Length) X 1.38" (Diameter) Package Includes: 1 Piece RPM Shift Light 1 Piece Mounting Kits and Wires Note: Professional installation is highly recommended (No Instruction Included)