It's pretty easy to do. Just don't put the cover on until you're satisfied with your needle settings. I did mine about three times because I did it while trying to drive. Easiest method is to jack up the front end ( RPM-MPH ). Of course, turn the key on. For the fuel, fill the tank right before the install and pop the needle on full mark. For the temp, get car up to operating temp, and put in the middle. That's usually where our gauges are at temp. When doing RPM and MPH, use the trip mode.