Hello everyone, it has been a long time I have not posted anything here. The reason is simply. My EM2 is giving me such a good time, and I virtually taking the car out for a spin (on top of daily commute) everyday. However, I still have problem on tapping in the full power of the pittful stock D17A because my EM2 DX does not come with a tach. It is logical that I am put one on by myself. After searching thought the forum (including others), I belive the engine speed signal wire from ECU is already routed into the terminal under dashboard. And for some reasons, I believe the wire should be blue! And I was lucky enough to find a under dash terminal picture for 01-04 Civic with a 32 pin connector. But the problem comes in with my 05 EM2 that it uses 2 16 pin connector. To add on to the problem, I find out there are 3 wires are in blue. (as attached pic.) Unfortunely, it seems the maintenace manual does not provide useful information. So I would like to ask if anyone is able to give me a hand on which blue wire I should hack.
Moreover, it appear there are unused female slot on the terminal box. Can I tap in any of this for tach. lumination power?


Cheer
B. L.