Westach 6 volt positive ground tachometer for 4 cylinder engine. 2 inch round, 0-3500 RPM. I ran this for a couple years but I switched to 12 volts so this is up for sale. Nice little tach. I doubt that I can find the installation instructions so there is a link below. They were easy to talk to when I was asking questions. Comes in a gauge cup for mounting. Westach 6 volt positive ground tachometer for 4 cylinder engine. 2 inch round, 0-3500 RPM. I ran this for a couple years but I switched to 12 volts so this is up for sale. Nice little tach. I doubt that I can find the installation instructions so there is a link below. They were easy to talk to when I was asking questions. Comes in a gauge cup for mounting. https://www.westach.com/product-page/2ct32-6vb-nc https://static.wixstatic.com/media/...v1/fill/w_2339,h_3056/Generic-tach-6V.JPG.jpg Attached Thumbnails Attached Thumbnails