Anyone kno how to put a aftermarket tach on a 90 civic hatch? The hatch was a dx model and didnt come with a tach so planning to put one in.

 

Didn't it come with instructions?

 

i got this from another guy selling it off ebay just came itself, i need to know what else i need to get to install it and where everything goes and how it is done thanks

 

There should be 4 wires: red, black, white/grey, and green

red= 12v power
black= ground
white/grey= i think is for the light 12v
green = tach signal...should be a blue wire near the driver side shock tower.

-rod