What kind of harness should I be using? Ive read through countless topics, but its hard because my car is so much of a frankenstein that I dont know which topics relates to me.
About the car: I have a 97 civic ex automatic, it has an 00 front end conversion, and an 00 dash conversion. And soon to have a jdm b18c gsr manual engine.
Heres what Ive learned: Correct me if anything is untrue.
The gsr harness wont fit into an ek chasis. The gsr ecu is obd2a. 96-98 civics are obd2a. 99-00 civic are obd2b. People say use the stock harness, but it was automatic, so I sold it. Ive been told to use an ex or si harness.


Now, I found a 99-00 ex harness for a steal of a price. Ive been told by some sources that I shouldnt use it since its obd2b and I need obd2a.

1. Should I buy this 99 ex harness or should I keep shopping for a obd2a harness?
2.Do I want an obd2a harness because the car is obd2a or because the ecu is.
3. since everything on the car is 99-00 including underneath the dash, Should I be shopping for obd2b?
4. If not, then why do people suggest an SI harness when thats obd2b?

 

is your complete wire harness obd2b or did you only do the climate harness? if you didn't touch anything ecu wise, you don't have obd2b.

use a 96-98 manual harness. no one (who knows what they are doing) will suggest a 99-00 harness for an obd2a car.

 

Awesome. Thank you. Thats all I needed to hear. Mods you can close this if you wish.