I have a problem where I get something unclear on the texture when the texture should be clean.
High poly completely covers low poly.
It should be a non color image. your image texture is a color image
Yellow means that the bake is seeing through the model and is catching the rear of opposite faces.
You need to add a little bit of “extrusion” in the bake settings. The smallest amount that fixes the problem.
This may be a difficult mesh to bake with “selected to active”, because it has multiple pieces that intersect. You might need to physically separate the sections from each other for the bake to work correctly (each part having its high and low versions superposed, but separated in space from other sections so the bake doesn’t catch them).