Electrical components on the left side of the car do not work?

Hello and thank you in advance to whoever takes the time to help me out.

I have the vehicle listed above coupe Sport (non-cabriolet). Recently, after replacing the battery, the majority of the electrical components on the left side of the car do not work. Here’s a list of electrical components that are not working on the driver side, dash & center console, followed by a list of what's not working on passenger side.

Not working on driver side & dash/center console
- blinker light in rear view mirror
- seat adjustment switches
- driver door window (stuck down)
- rear driver window
- dash cluster flickers all kinds of malfunctions (sometimes it’s 3 malfunctions sometimes it’s 6 or 7, there’s no consistency)
- every 7-12 seconds or so the brights flicker and so do the brake lights (both lights)
- the auto roll up window feature does not work when using the key fob trick
- brightness of digital temp numbers flickers really bright randomly
- “low fuel” light flickers even when car is on a full tank.

Not working on passenger side:
- I get error on dash that says the passenger seat is not secured down. Now I can’t adjust the seats using the seat switches on the door. This was just working fine until I took the seat out (battery was disconnected) to clean the carpets and bolted it back in.
- rear window won’t roll up or down (stopped working at the exact same time as the other, driver side windows)

All fuses have been checked, as far as I can tell none are blown. Some random things to note about the car - it has an aftermarket alpine stereo system that was professionally installed and the power for the system that connects to the battery is disconnected. The car sat for almost a year and I removed 3 small mice from it. The mice nest was in the trunk, it does not appear that they chewed on the wires. I was also told (though I don’t know if it’s accurate or not) that the wires in the car are not soy based and mice likely would chew on them. I noticed the majority of these issues after replacing the battery. Engine, transmission and everything else runs flawlessly.

Thanks for reading and for any advice offered!