This auction is for a vintage Sun 6K Tach mounted in a chrome cup. It also includes a vintage Sun Transmitter EB-9A. What you see in the pictures is what you get. I do not have any mounting instructions or connection diagrams. There is some wiring connected to the Tach, but it appears to be original. That is a polite way to say the wiring should be replaced. Neither the tach nor the transmitter have been tested, but there is no visible damage. (Other than the tach does have a tiny ding in the chrome face.) These are cool old pieces that should have many more miles, or RPMs, left in them. Feel free to let me know and thanks for visiting my store! Location - 4A