For wiring the buttons and joysticks on your control panel, use 20 or 22 gauge stranded wire.
For wiring power (12 volt and 5 volt DC), use 18 gauge stranded wire.
For wiring something else, please specify and I'm sure someone will have a suggestion.
p.s. you question was only "dumb" because you didn't specify what it was you were trying to wire... I'm just guessing here based on the context of this site.