[Al Skierkiewicz]

Indie left out this...
<R37> The 12V battery, the main 120-amp circuit breaker, and the PD Board shall be connected as shown in Figure 3-4. In particular:...
That doesn't leave any room for interpretation, sorry.
Although it will make things easy for you, it adds two more contact areas to heat and fail, it gives you four more crimps and up to 4 additional feet of wire if you don't cut the #6 to size. Those losses start to add up. You should try to minimize electrical loss especially in the primary wiring.