First let's check for power at fuses C in the distribution center under the hood and fuse #5 at the right side of the dash, please check the power when the systems are on. Here are the wiring diagrams for both, so you can see how the systems work, they don't seem to share too much, not even a ground.
https://www.2carpros.com/articles/how-to-check-a-car-fuse
Check out the images (below). Please let us know how it goes.
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Monday, July 3rd, 2023 AT 5:42 PM