So i Have a 1991 Civic hatch si with a B18B1 swap. Went and bought a Auto Meter Tachometer and obviously cut the blue wire on the Tac because its a 2 paulse system. Everything is hooked up besides the green wire and im trying to figure out were i hook it up to.......... If someone knows please inform me cause i did have the stock tac but it just stopped working and i have no idea why and i kinda need a tac lol. Thanks

 

coil negative is your Tac signal.

 

So that would be the white wire with a blue stripe that comes off the dissy? cause i tried that and nothing. My stock tac was working than just stopped and was working on an off so thats why i went and bought a new aftermarket one

 

Here you go cabron

https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/tach-signal-wire-ef-136221/

 

red - tap into switched 12V power - best to run to underdash fuse box
white - tap into dash lights
green - connect to blue wire from distributor 2-wire connector
black - ground