My favorite wire for wiring guitars- period.
Good old USA Made Consolidated stranded 24 gauge copper wire. The vinyl jacket resists heat so it won't dissolve during soldering- and best of all I've found the Consolidated stuff seems to stay where you put it- kind of like solid core wire without the brittleness and stiffness.
This is hook up wire made for GUITARS- extra thin jacket cause guitar cavities are notoriously cramped- Custom made and spooled just for US!
A roll of white, black and red should take care of your guitar projects for the foreseeable future.