Wiring Problem; Help is greatly appreciated

[TheRealEnth]

So I was going about removing the stock radio to replace it with a pioneer head unit. we had spliced the wires and it was getting dark.. my friend rubber banded the wires together for neatness... so next day i turn on the car in the morning and i hear an electrical spark and it sounded like it came from the wires so i saw the situation and unbanded them. I didn't know at this point if i had messed anything up or just clicked em. So we go install my head unit and it doesn't seem to work. Here we are thinking maybe we put the wrong wires together and after double checking, I soon realize my dome/map lights don't work anymore. So now I have my dome/map lights and my radio not getting power whatsoever. Everything else works fine though like my trunk light etc. I am stumped at this point; could my complete wiring have been fried when the wires all touched?

Any solutions/insight anything at all really would be great from some of our electrical techs here. Thank you for reading.