Hello! I have a Smith RVI tachometer in good condition for sell.slight scratches on the silver ring at the front ,visible on the photos and the rear back cover was lost, now a replacement is installed. Works with 4-6- and 8 cylinder engines !The tachometer has been inspected and calibrated all internal electronic components as well. works with the 123 electronic ignition! Everything works tip top, the electronics are in very good technical condition. I can safely guarantee trouble-free operation for many years! The cables are described how to connected I am also attaching the connection instructions.Price in the add is the price I want for it.no more,no less so please don’t ask.Eny other questions You very welcome .