I agree the electrical system can be a little frustrating at first, but if you take the FSM wire schematic, make copies and then color the circuits you are working on with the colors called out, it will help you better understand what could be happening. One circuit at a time. Electrical is just like plumbing it takes the path of least resistance, and sometime like plumbing you have a leak (short to ground) on something not connected. Wire schematic is key. There are large colored laminated copies of the wire schematic available for sale, but cannot find the link right now.
Oh and by the way the big hammer may be a little overkill for electrical issues.
Oh and by the way the big hammer may be a little overkill for electrical issues.