Review on Heads Display IKiKin System Voltage by Sabrina Geppert

Doesn't work on older cars. My '04 jeep doesn't seem to want to read it other than the voltmeter. GPS mode doesn't seem to work either, it tells you which direction you're going, but when you try to use GPS mode for speed it doesn't work. do nothing. Even though the clock is ticking. On the 30 minute drive he actually decided to turn me off 4 times for no apparent reason. I thought it was my OBD2 port but my scan tool works fine and is able to get all the data. I wouldn't recommend it to anyone with a car older than 2010.