Solved! How do i connect my cretro console emulator with 118 ganes installed to my old tv?

[puppyblue00]

My console only has two composite av ports and cables one yellow, one white. But my old tv has three ports how do i connect and when i connect how do i change from tv to av?

 

[Supahos]

Go yellow to yellow and white to white... Should be a source button somewhere to switch to component video