OK, all is well. I replaced the fried alternator, and also the glowplug relay. Now it's charging up perfectly.

The horn and back up lights was Indeed the fuse 14.... I'd replaced Almost all of my fuses with the new copper ones except for a few, including that one. I took it out and with sandpaper got the corrosion off and it worked, tho I am definitely going to replace it.

Thanks for your help, everyone!