95 civic eg vx hatch

Swapping d15z1 to 94 si hatch

The area circled is where the engine harness connectors are

There are 4 connectors

What does the bottom connector control?

The si ecu harness is not wired for this connector

On the vx harness its a blue cover that contains 4 wires that run to this connector

Is it safe to run the d15z1 without it?

If need be ran..... Any pointers for pinning the wires into the si ecu connectors?
***there are some empty slots on the si connector for where the wires go on the vs connector***

Electrical is not my thing but I'm really trying to make this my personal build and say I did all the work..

Thanks guys
-phill

 

This is the actual connector sorry for crappy picture above

 

the si harness and vx harness are not compatible, the vx engine uses the wideband ngk o2 sensor and an egr system, none of which exist in th si harness.
if you just want it to run and dont care if it runs like crap or doesnt get anywhere near the mileage it should you can slap the si engine harness on the vx engine and run the p28 ecu.
or you can get teh vx and si electical manuals and go to town....

 

I already wired the vx engine harness to she si. I just needed to know what this connector is for because it's all I have left and I dont what it's for till I put the motor back in. And I would like to go ahead and pin the connector if I need to. Was not fun I promise