I have an old TV, RF Modulator, and a DVD player.?

Question

How do I hook these up? I need some sort of picture diagram. I think I need a A/B switch, but I am not sure exactly which kind. There are many types of AB switch adapters.

Answer 1

old tv has rf input
rf modulator has rf output
dvd player has rf output

a/b switch has 2 inputs - 1 output

connect dvd to A input
connect rf modulator to B input
connect tv rf in to output
turn everything on
set both dvd and modulator to channel 3 or 4
set tv to same channel
select input