OBD0 wiring question. pretty simple.

jane_honda

its just a small civic.
Okay so i had a 91 std base model ef hatch. I have the jdm b16a obd0 motor. In my base model hatch it plugged right up. the necessary wires were run. so on and so forth. Now i have a 90 Si ef hatch. Still got the same b16a. The Driver side Plug is smaller on the chassis harness side and has 8 pins while my b16a harness side is larger and has a 9 pin plug. On the passenger side there is a plug on the chassis side that does not have a matching plug on the engine harness side. Ive done some looking around and i see a lot of people saying i need the d16a6 engine side wiring harness. then run two wires for vtec and vuala? Is this true? if i buy a d16a6 engine side wiring harness, swap it onto my b16a motor will it plug up to the motor and the the plugs that currently dont match?
 

jlicrx

New Member
Registered VIP
5+ Year Member
yes, you need 89-91 CRX/Civic Si engine wiring harness - it will plug right up to everything - you just need to add wires for VTEC, knock sensor and 2nd O2 sensor
 




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