Step 6Solder Wires to LED's.
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Now you need to solder the wires you just created to the LED's. ALL OF THE POSITIVE SIDES NEED TO BE ATTACHED TO EACH OTHER. SAME GOES FOR THE NEGATIVE ENDS. This needs to go all the way down the belt. It should look like a ladder. Soldering the LEDs together like this gives it a christmas light-like effect, so that when one goes out, all of the rest stay on. Also, if you try to make a single circuit, where positive is attached to negative, with 19 LEDs, you don't have enough power for them all in a single nine volt.