5 minute install - 1 cable that plugs into the OBD2 computer port under the dash.
You can set it up to scan so it displays 2 parameters for a fixed time that you set
then it goes to another set and scrolls through whatever you want.
It also has a 0-60 and 1/8 mile and 1/4 mile timer. You can also program the red lights on it to come on like a shift light on a tach or even to come on when say the
coolant temp goes past a certain degrees the lights will come on to warn you.
Pretty cool thing.
check it out more here