Smiths Electric Semi-Programmable Tachometer RVC1003 with Housing.
You can set the this tach for V4, V6, or V8, and you can set the red line needle. Tach is very accurate and responsive as you can see in our test. This comes with the housing unit already, so you can mount it anywhere you please. We did find that the wires in the wire harness are bad, or the connection, or something. We had to hook up directly to the back of the tach. There is a diagram on the back of the tach showing hook up instructions.