Hi! I'm new, please be gentle!

I have a 1991 Pontiac Firebird. Recently, I removed the broken motorized antenna and replaced it with a unmotorized unit, which is short, black, sort of like an antenna from those old brick cell phones. It gets great reception and I'm happy with it, but that's not the problem. The problem is what happened afterwards.

My mirrors on either side, as well as the truck button, the cabin light, and the electronic door locks stopped working.

What did I do wrong? Is there a short? Did I cut the wrong wire or unplug something or is this all a problem with one of the fuses?

I need help figuring this out!

Any help will be greatly appreciated. Thank you.