Ive got a SOHC vtec ZC, originally ran OBD1 i assume. I want to run it OBD1 in my car now, because its running rich and generally not running as well as id like.

My question is, if i want to convert it to OBD1, if i buy the jumper harness to plug the OBD1 ECU in, do i need to do anything else, wiring wise? I already know i need to run the wires for the 4 wire O2, and theres some wiring with the OBD1 distributor as well, but will i need to wire anything else under the hood besides those 2 things? Or will the jumper harness take care of all that? I cant really find any explanation, and i checked the rywire site but they dont really explain in a lot of detail exactly what the jumper harness does. I see mention of a chassis harness, and theyre saying you can send your engine harness to them and have it wired... do i really need to do that? Im comfortable enough to wire up the O2 and distributor myself.

 

you have to do some wiring with an obd1 jumper harness.
http://www.boomslang.us/obd0_1.pdf

 

rewire the dizzy, and add a 92-95 4 wire o2 sensor. everything else should be fine.

 

Thats thats exactly the information i was looking for.

That boomslang PDF is really helpful. Maybe i will order their conversion harness.