If the battery cable arcs when touched to the battery, (or the other end) and the engine cranks, there is only one thing that can be wrong. The relay (solenoid). when all small wires are removed from that device, it should be an insulator and nothing should get through it. If it does, it is broken. (this includes even the wrong part that looks correct. The one wire setup is simple in that it requires three changes. Bulbs to 12v, coil 12v no resistor required, or 12v resistor required if the original ford system had a resistor wire in the ignition circuit (often pink). The coil needs to be attached with the Negative terminal to the distributor. The last thing is the heavy wire from the new alt (should) go to a 40 amp fuse, or fuse link) then to the positive battery terminal. If you want the amp gauge to work, it needs to go on the load side of the amp gauge. Many of the Ford tractor and early Ford cars had a relay that was turned on by grounding at the starter button. Later ford relays look the same, and are very different, they work by getting 12v to the S terminal. Jim
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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