Hope you can help a jeep noob. I just acquired my 95 manual 2.5 yj. The previous owner replaced the relay box and harness and fuel pump. The issue I have is it blows the fuel pump maxi fuse as soon as you turn the ignition on. I was told it did that with the old wiring and old fuel pump. I thought it was going to be a short but now I don’t know. I have read that the o2 sensor could be the culprit. I don’t know…..