Using a piece of heat shrink is a very effective, seamless way of splicing two wires. Here is how you use a heat shrink in wire splicing. First, cut a piece of heat shrink and enter it into one of the wires. Make sure the heat shrink is far away from the splicing area. Now then splice the wires and hold them steady with the help of scotch tapes. Then solder the exposed parts. After soldering, bring the heat shrink on the exposed part and heat it to shrink and hold the wires tightly.
In case you do not have a heat shrink, you can always use wire connectors. Twisted wire connectors are the best connectors. Simply bring the exposed parts of the two wires together but do not twist them. Then place the cap on the exposed part and twist the connector clockwise for about 5 seconds. That should be enough. If the wires are still loose, then twist clockwise for more time until they are tight and secure. That is how you can easily splice two wires with twisted connectors.
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