Just got done discussing this in another thread. I pulled the battery out of my Columbus and it had black and white wires instead of black and red wires.
The black and white is from trailer wiring. Black in positive 12vdc and white is negative 12vdc. From a small slide in truck camper to a large 5th wheel, they are all considers trailerable RV. Soooooo, hence the trailer wiring color codes.
Bargman 7 or 5 pin trailer connector plug was my clue.
Pic of my battery before removal for winter