making a conversion harness to go from obd2 to obd1 figured every thing out but the sensors in the distributer have 2 wires going from the ecm to them. sorry but dont have the diagram with me now and i havent unpacked the dell yet but will try to get the pin no. on here asap but you will probly know what i need to know. and one more q will the obd2 primary o2 sensor work for the o2 when running obd1. I asked you(BLOWNHATCH) some questions as 89sivichatch a while back and was then wanting to go obd2 but then saw the malfunction list for the obd2 system compared to the obd1 hate to admit it but should have lisened to you in the first place . any way what way do they go