It's just the removal of the heavy gauge wiring from lug No. 2, which is connected to the 12 V connector terminal on the Reverser motor.
Replacing the DC cable between the Reverse module and the Reverse motor will restore the functionality.
I took a closer look at the Reverse control module, which is reporting water ingress which is the root cause of corrosion of the electrical terminals; Ohm's law says, higher-resistance = higher voltage drop & lower voltage = higher current (amperage). The corrosion will cause poor conductivity, resulting in higher resistance, which has a cascading affect which results in higher amperage, and most likely electrical overstress or high heat.
The below image shows what could possibly be the water ingress point, located at the upper No. 2 terminal.
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