First off, I've searched and searched and searched for anything remotely related to my problem and had no luck finding my exact electrical situation. Here's the deal

I have a 97 civic ex w/ a 1998 gsr b18c1 engine. I have converted to a obd1 p72 usdm ecu via Skunk2 jumper harness. Now, I noticed for the past year that under certin engine loads/ under 3,000 rpms, my alternator does not charge my battery. The voltage drops from 14.1 to 12.3. However, if I turn on the blower motor, the voltage will rise to 13.9-14.0 and stay there. I replaced the fuse box w/ a new one from my work (honda) because I thought it was my ELD (Since fuses USED to blow down there) and still, the same problem. So I double checked all my connections and realized I have not plugged in the CKF sensor. I cannot find the plug for it on my civic engine harness, I dont remember what I did w/ it since I am the only person who has worked on this car.

Ok, so now, I dont have a CKF hooked up however the obd1 p72 ecus/engines are not equipped w/ them. So what now?? I looked in the helm manuals here at work (civic 96-00) and for my car, it was equipped w/ a ckf sensor stock. I was wondering if any of you know if its required to be hooked up REGARDLESS if my ecu needs it, like if any other sensors/eld require signal from it to properly allow the electrical system to work. There is a wire that leaves the ckf sensor to j130m but it doesnt say what it does. Hmmm, any suggestions?

Thanks for the help, if anyone can help.