I have a 95 civic dx and i got a gauge cluster from a 92-95 civic ex sedan and there are 4 plugs on the back. I know this cause i took it out, but when i went to put it in my hatch, the hatch only has 3. everything worked except for the tach. that was the whole reason for getting it. If someone could please tell me how to make this work i would appreciate it. Thanks!!!