questions about battery disconnect wiring

Wow! Thank you, @Mattax !
It’s getting clearer.
Incidentally, I should’ve mentioned that I previously did the Mad Electric ammeter bypass.
In regards to the CDR, you mentioned 85 and 86 terminals. That makes me think of something like this:upload_2022-5-12_10-49-21.jpeg
I have a Cole Hersee 24059. Should I get something other than that?
What about crackedback’s point about the CDR sticking?