Battery draining fast

The brown is likely not a ground (if that was what you are asking); if it is what I think it is, it comes from the starter relay and carrires the current that activates the starter.

Sorry earlier in the thread I questioned a black wire that was cut off which was later found to be the Ground to the frame . The red and brown wires were all harnessed together along with the butchered ground . Thats when I spliced the battery and original ground and got good readings . Few days later it stoped charging again . Then I saw the connection at the starter is the picture I posted. Pete's been kind enough to walk me through the correct connections.