[EFsleeper]

Just did mine in my 89 std hatch. No factory tach. you will have to run your tach sense wire into the engine bay. You can tap into the blue wire coming off the distributor but to make it look cleaner (basically not have one single wire ran across your intake manifold or valve cover) you can catch the same blue wire in the left side of the engine bay at the molex plugs. By left side I mean passenger side. Its the smaller of the two plugs(the one closer to the motor). You can catch power and illumination the fuse box by using a female spade(speaker connector). There are unused male terminals in your fuse box. Test them with a multimeter. To make sure you have the correct blue wire for the tach test it with a digital multimeter with the engine started. The tach will fluctuate between 2 and 10 volts of AC current. That should be it. Anymore questions hit me up dood.