Shady GT

I'm thinking of switching over to manual wind up windows and I'm just wondering is it a simple conversion or more technical? I already have the manual window regulators and the power doors. Thanks for the help.

Hey guys, I'm new on this forum. Got a '91 Starlet GT that has an EFI Fuse at 30A. I've noticed alot of manuals say 15A but my car only starts when its a 30A fuse. Any suggestions on why?