How do you install an aftermarket tachometer on a 1989 Honda Civic DX hatchback?

Answer 1

Theree should be instructions with the tach.

you first want to mount the tach brackets where u want them. then you run your ground wire (black) and coil wire (green) through the firewall(there should be a stock hole in the firewall behind the glovebox). then you want to run ur power (red) and tach illumination(white) to your fuse box. from there u should be able to do it but the white wire goes to your headlight fuse or u will have to look at that light all through the day where as if u run it to the headlight fuse, it will only come on when u turn on ur headlights. have fun and enjoy

If you can find a donor lx of the same year you can swap the two dash kits (Tach, speedometer and idiot lights etc) and the lx/si factory tach will plug right in and the other guages will work the same if not better