I had exactly same experience. Looks like wires are bundled up in tape an not long enough to pull out the radio and get your hands on the back of unit, only my fingers.
There is over a 1amp draw on battery which quickly drains battery. Turn off use battery switch to stop the static and the battery drain. When you hook up shore power the static radio comes back on.
There are manny dozens of complaints on several forums about this JRV212T radio static camera loss problem.
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