- 1). Place something soft beneath the lights while working on them. This will prevent the bulbs from being damaged.
- 2). Unplug the lights. Unscrew the plug and make sure the connections are secure. Flickering may be caused by a damaged wire that only intermittently connects the circuit. Cut the protective plastic covering back 1/2 inch on any damaged wire ends. Snip off the damaged parts and insert the undamaged wire into the terminals and secure them.
- 3). Check the length of the wire for fraying and other signs of damage. If the wire is broken anywhere, or only connected by a few strands, peel the plastic protective layer back on either side to reveal undamaged wire. Cut any damaged wire off and dip each undamaged end into the tinning flux. Place some newspaper on a flat surface and line the wires up on it so their ends are touching. Turn the soldering iron on and allow it to heat up, being careful to keep the hot end away from any flammable materials and skin. Melt some solder over the area where the two wires meet.
- 4). Wrap the area with several layers of electrical tape when the solder has cooled.
- 5). Look for pronounced creases in the wire where it might have been folded or compressed during storage. Wire that is severely bent is more susceptible to snapping when it's unfolded. Expose the wire beneath any creases by gently cutting into the plastic covering around it and then peeling it back. If the wire looks damaged, follow steps three and four to create a new join.
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