Electronics won't turn on

So one day while I was still working as a delivery
boy, got bored because we had nothing to do, so I
started tinkering with my aftermarket stereo,
everything worked properly it turned on & off etc
but the one thing it didn't work was the actual radio
it'd just be static so I couldn't listen to FM or AM,
so I'm that type of guy who likes to take things
apart and finding out how they work, so I started to
take out the stereo, tried figuring out what cables
were what, and when I figured out why the stereo
wasn't working it was because the actual radio
cable was not connected to the stereo, but by the
time I figured it out it was just a matter of putting
everything back to its original place but at that time
it started getting busy at my job so I didn't have
time to put everything back so I was literally
delivering with my stereo hanging out, so it got to
this one point where I went back to my car after
giving the food to the customer, and decided to just
put everything back so I didn't have to see it
dangling anymore, and half way into it I feel a small
electricusion on my fingers (I had the car fully on)
and I was hoping I didn't mess anything up, turns
out when I finished putting everything together my
stereo wouldn't turn on not only that but my
switches to lock and unlock all the doors stopped
working to so at that moment I knew the stereo had
a 50/50 of still working, but I knew some wire had
gotten fried cause of the unlock & lock button not
working either, so after 10mn of typing I'm asking
you guys, do you know what's wrong with my car?
Or do you know a solution plz let me know