Doesnt it split, and the thin cable bolt to a lug on the battery tray and a thicker cable go to a bolt on the inner wing, or bulkhead? Sorry, not much use...
If I get home early enough and I can see it in the dark, I'll have a look.

I remember, when I rebuilt my engine, the thicker cable overheated when I started it up for the first time, so had to make a new one...