Buy a set of plastic pry trim tools. Cost a couple of bucks. Extremely useful when working in the cab area. My Axxera came with several loose connections that became detached over time. Pulled the trim. Couple screws removed the unit (actually was missing 3 mounting screws that caused the thing to shake and rattle). Traced and pushed all the connections together snugly. Found some extra screws for the remount, snapped trim back on. Works like a charm ever since. I think most problems described result from a very poor original install. Total time 20-30 minutes. Difficulty.... fairly easy.
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