Perhaps I'm not seeing clearly, the photo in post #61, but I think there is a twin wire consisting of a positive and a negative coming from the roof AND another twin wire crimped to it, going downward towards presumably the battery compartment or to the auto reset fuse pictured photo #2 of post #70. At where ever the second twin wire ends, that is where I would suggest putting the rail mount D/C mini breaker. Then from the mini breaker, continue your wiring to the "in" side of the solar controller. The mini breaker is your safety disconnect to employ anytime you need to open the circuit going from the controller to the battery. What Daryles is explaining at the end of post #71 goes hand in hand with my comments.
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