First you need to have the Tingle tuner and bombs. Set the Tingle tuner to Y Z or X and Bombs to Y Z or X.
(to make this more easy press start enter the select item subscreen put the cursor on the bombs and exit the start menus).
Press the start button at the same time as you press the button that you set the tingle tuner to and replace the the tingle tuner button with bombs within about 15 seconds. Press start again and link will be holding a bomb over his head with a message at the bottom that says you can only call tingle from areas that have maps. Press A or B and you can use the bombs to do what ever you please.