You should not even be thinking about using the frame as a "ground". What you need to do is create an electrical circuit that includes a direct connection from and back to the battery and eliminates the frame as a conductor. It is all explained in detail in this article about proper grounding. And, get rid of the glass springy fuse thing and replace with a modern blade fuseclarification. Everything is powdercoated and putting in a brand new loom. Real question is where do I grind off the powdercoat for a good ground. Im thinking the tab where the coil tray/battery box connects to the frame tab?
Rockerbox head steady stud. At some point on the T140s, this became a standard connection built in to the loom.Where is a good place to connect a ground wire to the engine?