Question What awg size wire do I need for the Ashida Wii Portable speakers?

[YT N9-Volt]

ive looked everywhere even the tools needed and there no post saying ashida speakers when wiring them and I don't want to do the wrong one? This is for the controller board since the speakers don't make good contacts.

 

[YT N9-Volt]

And I don't know what wire for L and R running the contacts for the controller board in the bracket thing?