Newb here so be gentle.. i have a 2018 Arctic fox 811 that i have installed 800w of solar on with all victron componants. Everything is installed and working as it should except for the wiring to the ccgx relay. I wired the momentary start stop onan remote switch to two crouzet mur3 timer relays as per the wiring diagram on the victron site but i am stuck at the two wires coming out of the crouzet relays that go to the ccgx relay. Do I need another automotive relay between the timed relays and ccgx? i don't understand the wires going to B+ and B- then to the ccgx. what is the rectangle box with the diagonal line?