battery and wireing info please

We bought used from individual in MS at a deer camp and it was hooked up to shore power there and we just moved it here. We had something attached that would activate the emergency brakes if it would have become disconnected during the trip here. We are fenced in here and it would be a major thing now to get out lol- the small black wires I'm questioning are or should be I believe connected to the heavy duty wires that connect to the battery (positive and negative) there are 3 and 1 of them is connected to the positive red wire but the other 2 are not connected to anything and that's what I need to know is where those 2 wires go. It is a 1985 Fleetwood Prowler. Yes Pearland is near the Gulf coast right outside of South Houston. My husband is retired disable and I want to hook up a solar panel system to be more self reliant to help with the limited income.