Solar panels - controller - fuse - bussbar - battery exactly same format except for fuse for the negative on this circuit.
Hotel loads (means just about everything else) whether one wire or six, gets connected to the bussbar positive and all the negatives get connected to a negative buss bar.
The huge buss bar negative cable does not run directly to the negative post of the battery.
It runs to a stud on the shutoff switch
Then in continues to the the negative stud.
Never EVER more than one cable to each battery stud.
The same protocol is used for the positive leads but there is no shutoff switch.
Other subject
Take note SOME solar panels and controllers can utilize extremely high voltage from the panels to the controller. THESE ARE THE BEST CHOICE FOR YOU because of small factory installed wire, Get advise on this forum for specifics.
This forum will be around when you need to ask advice. Buy your panels one month the controller the next and an inverter yet another month.
You need to change your interior lighting to LED -- period. Not an option. Might as well get that over with first.
