You are correct, it is a four post relay. One is a hot wire, one goes to the starter, one to the key switch and one to ground except mine doesn't make ground. If I put a jumper wire on it to ground, key start works normally, I agree the problem is in the safety switch circuit. Problem is that all the wiring is in looms . Even have tail lights and turn signals all in the same loom. Book wiring schematic is just a "stick" drawing and doesn't show actual locations and current flow. Took today off, will hit it again tomorrow. Thanks Mark
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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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