A friend of mine was having issues with his Winnebago Micro Minnie traveling trailer. It didn’t get power from the 12-Volt Battery.
First we found out the battery was exhausted as it would no longer charge. So we replaced it with a new one that was fully charged. the trailer still didn’t get power from the battery.
We looked for any fuses and circuit breakers in the trailer and all seemed to be functioning properly; still no power from the battery.
So we traced the wires from the battery to a junction box under the frame.
We later figured out that there’s a circuit breaker in the center of the junction.
It’s a tiny black button that popped out when the breaker was tripped. Press the button to reset the junction box.