Now you're iron man with blink signals.
BE SAFE OUT THERE!
When removing, make sure you remove the pack or panel before unstrapping the entire band.
-Flickering and loose connection.
Nothing a little piece of tape securing the ends of the switch to the battery can't help
-Light not turning on.
Make sure the ends are touching either battery and positive plate and mercury is touching ends
Battery is dead. or could be wire disconnecting.
-The EL panel and wire have disconnected.
Solder it back. Be careful not to melt anything!