I have a 2013 Boss 302 Mustang, and wanted a shift light. I also wanted to easily read the RPM. This is undoubtedly on great meter. Solidly constructed, well documented so it was easy to install and use, and it works flawlessly. The only thing I would change would be to dim the display a bit, but it is easy to read in any sunlight, and not all that overly bright at night. I have gotten used to it. It looks cool as well! I needed a tach adapter, and I used the autometer companion adapter which I ordered with the gauge. I also ordered a Roush vent pod mount for the gauge. It only took me about an hour to install the vent pod, tach adapter, and shift light meter, and I could not be happier with it. I highly recommend this product.