Me and my mechanic have been building my ef civic for 2 years now and we are very close, any help would be greatly appreciated. INFO: 1990 civic dx with b20 frank engine, obd1 everything. as you see in the picture I have the obd1 ecu attached to my stage 3 wireworx harness. This harness has 10 wires the come off of a jumper that is attached to the 3 obd1 plugs in my ecu. these need to tie into the system inside the cabin. these 3 plugs on the left are the obd0 plugs for the original obd0 ecu. the instructions I got from wireworx seem to only be for obd1 and obd2. my question is do I need to get a obd0 to obd1 conversion harness for the inside of my cabin to attach these 10 wires to? Any advice would mean the world I have poured my soul into this car and it is very close to being done please!

 

I am assuming you're talking about the wires that are hanging right there.

They are used for the 4 wire o2, b18c1 butterflies, vtec, check engine light, etc.

You're going to want to ask for a pinout or trace them to the pins on the obd1 side to see what they are for. I only used the cel signal wires, vtec signal and vtec pressure wires as I am running a wideband, do not have butterflies etc.

It'll run the way as is, but will throw codes at you.

 

Just an FYI but this is Rywires harness.

http://blog.rywire.com/wp-content/up...0to1jumper.pdf

 

Hello thank you for your time. I should have included this. as you can see I have the pinout locations these are suppose to connect. however there is no obd1. so do you think I can just buy the obd0 to obd1 jumper harness and connect as follows?