Hello cabin welcome to YT! I am horrible about giving lengthy replies that explain things in detail. I am going to break away from that here because you already have a lot of information. I believe your tractor has a fuel gauge on the dash, can you turn the ignition switch to the on position and make the fuel gauge register without the engine running? If so that tells us there is a circuit from the ignition switch to connect the excite circuit of the alternator to. This is shown as number 1 at the alternator in the diagram posted by Stevie. If that answer is yes it eliminates the need for the oil pressure switch.
So looking at that diagrams posted so far do you think it is clear enough for you to connect your alternator correctly? As was mentioned by another poster properly disconnecting the current charging system components also adds some complexity to your task. Lastly if you are not real good with wiring diagrams, in JMORs post everything inside the box with dashed outline at the upper right is the internal circuitry of the alternator and can be disregarded for the purpose of this post. Now I went on more than I wanted to anyway. If you would give a quick answer to my two questions it would help us proceed in a proper direction.
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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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