New starter, which wires to hook up?

[jjuriga]

thanks everyone! I did hook that little one up to the 'S' based on some reading i did immediately after posting this.

So after getting the wires hooked up, I found yet a fourth wire with a larger eye on it. I have no idea what its for, or where it comes from. It appears it is coming form the opposite side on the engine (from the starter). I know its tough without seeing it, but has anyone heard of four wires being being attached to the main bolt?