I just ordered a harness from a 92-95 EX civic..
Swap is going into a 94 CX Hatchback
Will this have EVERY wire I need to run? I know it has everything for VTEC already, but I'm not sure on the knock sensor.

Its a JDM B16A/P30 ECU

If not, what wires will I need to run myself??

Thanks~

 

knock sensors came on 96+ civic's.

 

P28 doesn't look for knock...

 

No knock sensor in a JDM P30...So don't bother

 

Right on, so with the EX Harness it will be 100% plug n play? Won't have to run any other wires?

 

you will need to add wires for vtechk and vteckh oil pressure....in the chasis wire harness not the one you bought! unless the car is a 92 cx....or an si

 

Or a VX or EX....

 

I bought the entire thing from engine to ECU!

 

The cx doesn't run a vtec.The wires are in the harness but don't go to the motor nor does the dx,vtec=si,ex,and vx

 

errr wrong,

there is a knock sensor even in the very rare very small jdm p30 ecu.
in fact the motor comes with a knock sensor.

every stock b series ecu has a knock sensor. open it up it should have a knock board.

and i second that you will need to add the 3 vtec wires and 1 knock wire in the chassis wiring harness.


[Modified by djhatch, 8:42 AM 1/2/2003]

 

EDM B16a2 P30 ecu's don't.

 

Ok, let me clarify:

I have a 94 CX.
I am putting a JDM B16A into it.
I bought the COMPLETE wiring harness from engine to ECU, from a 92-95 EX Civic. Even with this harness, you are telling me that I need to run VTEC wires, even though EX models have VTEC????

confused...

I was told I wouldn't have to run anything if I bought this harness.

 

You WILL have to run the wires from the connection at the shock tower to the ECU only. Since you have an EX engine harness the VTEC wiring is in that, just not on the cabin side of your car. I wouldn't have bothered buying the harness and just used the CX harness and added the wires. You said that you got the entire harness into the ECU so I guess if you were to use it completely there would be no wiring.