Main Chassis and Engine Ground Locations

Haynes says there are two main ground locations. The chassis and the engine. Since my RepRom BMW software is neither repping nor romming (I will fix that later), I was wondering if someone can give me a quick idea of where these are physically located on the bike since it will save me a lot of time of having to follow harnesses.
Anyone able to help? Thanks Yes, I did search various forums but have not found an answer.

I believe the engine ground is at the top of the engine along the back edge of the valve cover