Charging System Wiring

If Rob says a fusible link should be where you drew it, I'm not going to disagree.

IMO there should also be a fusible link between the battery and the main splice. That's to protect against a short in the wires that are always hot. Any of them ground out and the battery will be dumping 450 amps.
It's a link so it can still carry normal high current loads, at least for short periods of time. Its smaller than the regular wire to make sure it fails first. Thats the concept anyway.