This would not be hard to diagnose if you had the Ford Volume H service manual. However, failing that, we revert back to the hard way.... First, as already stated, the computer turns on the fuel pump for about 2 seconds when you turn on the ignition. You need to check for a signal at the fuel pump relay. Connections should be one terminal is ignition hot, one to the fuel pump, one to ground, and the signal wire from the computer. I do have a 1988 Volume H at my garage, but since I am at home now, it doesn't help much. What I CAN do is to get my manual tomorrow, and post back some color codes, pinouts, and component pinpoint tests.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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