Ok so apparently I've been wrong for some years now,shocker there! I have two black boxes,relays,on my 1989 4.3 tbi. Each relay has two plugs. I was just told today one of them is my fuel pump relay. Im assuming its the one that ticks at ignition. I also have two relays in my fuse panel under the steering wheel. I always thought they were for my starter and fuel pump. So can someone tell me which relays belong to what.