I have mine set here but it sometimes goes haywire:

 

Negative side of the coil or the blue wire behind your gauge cluster.

 

there should be a blue wire with a cap on it on the other side of the bay next to the resevoirs. If I remember correctly it was blue/ white. Don't qoute me on the colors, I just know theres a wire over there for a tach signal thats capped off.

 

^^^

It's solid blue with some small silver dots.

 

So from this picture, does that blue wire with the silver dots make it this far to the distributor, or do I need to take out the cluster panel and wire it from directly back there? I am not quite sure how to wire this exactly corrct. I would think that the wire would make it to the distributor. I was told the blue one but dont think they wer right cuz they were iffy about it also.

 

It will be easier if you tapped the blue wire behind the gauge cluster because you won't have to run the wire through the firewall.

 

ok so i have a 95 dx (no Tach) but i have a 94-97 GS-R cluster waiting to get installed, i have the clips for the back of the cluster with the 16 and 13 pins and all the wires. im goin to soulder the wires toegther from my current cluster to the
GS-R cluster but what do i do about the tach wire,i have one for one the GS-R cluster but what do i do about getting it there, help would be appreciated and pics will follow once i figure out how to do that, i feel like an idiot and if you think so go ahead and let me know, i can take some criticism. thanks for the help guys.

 

there is a tach signal test wire near the firewall on the drivers side of the car. it is a capped two prong harness with one blue wire. it was only put there for use by service techs and goes nowhere. imo the best place if you dont want to cut into IMPORTANT engine or cluster harnesses. i wouldnt cut any unnecessary wires if i didnt have to. the plug in taling about it near the brake master cylinder to narrow it down. im sure some one has a pick of this.

 

so should i just cut the cover of the wire and put the wire im gonna run to the tach onto that one?