What is the issue that you are having ??? I've never had to do anything with those connections.OK> Have my tank removed to work on starter and have been advised to check G1 connections and then solder them all together. That is a lot of wires....will a regular home type solder iron be hot enough?
I would not solder them all together, just take them loose and wire brush the contact point on the frame and remount them to the frame. Use some contact cleaner such as DeoxIT. If you’re concerned with improving the ground circuit, make a heavy gauge jumper and run it from this point to the battery grounding point at the right rear of the engine. It’s the metal plate at the reverse cables and lost motion plate assembly. You can see the battery’s ground cable attached to it. This will give the system a better electrical ground and not add any wires to the battery posts.