Dr.Jass
Pastor of Muppets
Don't reconnect that small yellow that was on the B terminal unless you know where it goes and what it does. It's not original to the car and I can't guess where it leads.There was another one on the main post, yellow, I suspect that was part of their bypass the relay setup, heaven knows what the 3 cut wires were for???
The 10ga red wire for the B terminal does not come from the starter. It comes from the battery terminal.I'll get a pick of my new positive cable the one for S comes up from the starter as does the red for B, that comes out of the harness about half way down.
If you look at your picture closely, the grey wire has "FUSIBLE LINK 16 GA" written right on its connector. That wire is (or was) the fusible link.Pretty sure the gray they used was direct from the battery with no fusible link at all. Going out to freeze in a while I'll at least get this part looked into!
It's very unlikely your new battery cable will have a fusible link in the small red wire, since 99.9% of cars using that cable don't have one there. You'll need to put one where the black wire butt-connects to the 10ga red wire coming from the bulkhead. I'd suggest using the grey one off the old battery cable, making sure to keep it as close to its current length as possible. Length affects how much amperage a fusible link will pass. A shorter link passes more amperage.