Connecting Plastic coated Wires

When connecting wires which are coated with plastic like in case of audio output wires and telephone cables, you need to get rid of the plastic coating at the ends so as to connect them in a conducting manner.

For this, take the ends and use fire or a blade to remove the plastic coating. Then only connect the wires.

This may seem a trivial thing to many but I found out that non-technical people mostly connect the wires with the plastic coating on and they burn their head trying to figure out why it didn't work.

Also, it was found that in some cases, instead of plastic, paint was used. Paint acts as insulator as well as a color coder for the wire.