Which is the one you have? I like the fact that they can be transplanted. I have a 97 Cat. Diesel pusher, a 02 Ford Diesel 7.3 van 4x4, 2 XJ's 95 & 99 and would like to keep the scan in the one I'm driving! Though my van has all the Autometer gauges I added like boost, tach, EGT, volt, trans temp, water temp, oil pressure, even a clock it's nice to see fuel economy as well. Unlike others the more knowledge and precise readings you can get the better. They call those lights warning lights IDIOT lights for a reason, by the time they come on it could be TOO late. I feel some of the factory gauges operate the same way, like the water temp gauge in XJ's being so unreliable! I'd like to have 3 of everything if it is going to keep my harmful temps down! I saw on some sites they can be had for around $150.00, if so I paid a lot more in gauges and feel this was a better way to go. Does it get plugged in directly to the OBD port or in line on the comp.??