Ok I have a 96 DX Hatch that I just swapped in an 00 b16a2. I have the harness off the b16a2 uncut and original ECU. Everything went fine fired up and everything but the tach isnt working. Looked at all tach signal wires and all is clear. Then checked ECU and only have 3 of 4 plugs plugged in plus the empry slot on ecu. We checked other friends with b16a2 and at their ECU they have the green plug, 1 blue, and 2 gray. Here is all I have.





Is there something I'm missing? There are no cut wires anywhere at all and the whole car runs fine except for that missing plug and tach not working.

If you need anymore pics of plugs hooked up to ECU or anything let me know. Any help is very much appreciated.

EDIT:

ok just took it for a test run and had no speedo also. temperatre gauge is working and fuel gauge works. also i know check engine should come on cause of test pipe and not getting that either. also when we came back the temp was at 1/2 way so we let it sit to run and the fan never came on and it started to rise so we shut it off.

 

ok we are using my d series wiring harnes and rewiring need plugs, ie vtec press and solenoid. also gonna use obd2a p72 GSR ecu. this sound about right?

 

If I remember correctly, 2B and 2A harnesses won't interchange because of wiring differences in the chassis harness. You're on the right track using your stock harness and adding the needed plugs, but instead of running a P72 ECU, which will be looking for the secondary ITBs, you might want to pick up an OBDIIA>OBDIIB adapter harness and run the Si ECU.

 

Correct me if I am wrong but, isn't the green plug for the Fuel pump relay?

 

ok we reused d16 harness and wired in vtec solenoid, vtec pressure, rewired crankshaft position sensor and changed iacv from 3 wire to 2 wire. also did neccessary pinouts at ecu. still running p72 until i can get p73. this is what another friend told me to run as it doesnt have 2nd o2 sensor and knock sensor anymore.

thanks for help