Screw on back turns between 4, 6, and eight cylinder useage 12 volt negative ground. Tach is new and in original box and has never been installed or used. Mounting bracket, light socket with wire, and a screw package is included. I have downloaded a copy of the Instruction sheet off the internet that will be included. Box is missing it's lid and is a little tough, but tach is perfect with no scratches or damage of any kind.
Lens is glass and not plastic. The item "NOS Vintage Sun Tachometer IT-475 4000 RPM 12v One Piece In Original Box" is in sale since Thursday, March 21, 2019. This item is in the category "eBay Motors\Parts & Accessories\Vintage Car & Truck Parts\Gauges".
The seller is "datedcomponents" and is located in Hamburg, Pennsylvania. This item can be shipped to North, South, or Latin America, all countries in Europe, all countries in continental Asia, Australia.