I looked for it there but did not see it in fact you should find it and send it to me as I purchased my tractor for you and the wiring Harness that on my tractor does not have the wries to make the dash battery and oil warning light work
I'm confused – didn't you get the same question asked and answered on another forum? The person who answered the question stated that he had drawn the diagram himself, so it is evidently not available elsewhere, is it?
I have never seen a pinout for any of these tractors. I don't believe they exist in the free world. Doing your own pinout can be done, it just takes time and patience. Or you can contact Jinma directly to see if one is actually available.