OBD2a engine in a OBD1 car?

[Hakosuka]

OK, so I got an MC2 aerodeck VTI without the engine and box in a car exchange.
As I already have a B18'd Civic EF, I don't need another fast car.
Sooo, I bought a D15Z6 economic engine from an EK, which is sadly OBD2a.

 

What I have done is this:

- I made another hole for the engine harness in the body to rund the OBD2a harness inside.
I just left the OBD1 harness in the car.

-On the OBD2 harness, near the ECU; there is another mistery green connector.
I tracked down the wires, and made a adapter harness out of an old OBD1 ECU.

-On the drivers side strut tower connector, I depinned the OBD2a connector and inserted the pins in the old OBD1 connector from an old harness.

 

 

Now, the problem is...My ECU doesn't get the power source. I tracked down the OBD2 harness and the same wire goes from the drivers side strut tower connector to the injectors, IACV and to the ECU.

I don't get 12V on the car side of the strut tower connector. So the car itself doesn't give the power. Also the fuel pump does not prime. I checked all fuses and it seems OK. I didn't try another main relay under the dash.

 

Anybody done a OBD2 engine to OBD1 car conversion?

 

I am considering buying an D15Z8 (MB3) ECU and converting the engine to OBD1.

[Hakosuka]

I figured out that the Immobilizer cuts starter AND fuel. So, if anyone will be doing this, convert the Immobilizer unit wiring and it will at least have starter signal. You obviously need the right key. (Key->Immo unit-> ECU ; they must all be from the same car  (same code))