Click,Click,Click!

I had this happen to me a couple weeks ago. It turned out the battery had 2 wires connected to the terminal lug.. A 10 awg and a much larger gauge wire.
It turned out the large size wire had slipped out of the terminal lug and only the 10awg wire was there. It is not connected directly to the starter like the other wire and could not pass enough power thru it.
I noticed it when the wire started smoking and then I found the disconnected wire