This is more of test of uploading photos than anything. If the diagram is usable and useful then great. If not I hope Phil will delete it.
There have been enough questions about engine wiring that I wanted to get this onliine if possible.

Early Hunter wiring diagram from Yanmar manual.

This is the wiring diagram that came in the little owners manual. Thought it might be handy for reference here on HOW.

H37C Electrical Diagram