In my system, the BIRD was miswired at the factory. And shore power/generator did not charge the chassis battery because the correct voltage from the coach batteries did not get to the BIRD so it never told the Trombetta to open.
As you can see in the picture of the BIRD, it lists the color of the wires that go to the different locations. My simple solution was to cut the red wire coming out of the BIRD and connect it directly to the left (as you are looking at it from the front) post of the Trombetta. The system worked perfectly after that.
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