Okay I know that in Jesus day there were definitely no electric lights! In His time you either had to use an oil lamp or a candle, either of which needed a wick. But you could also consider a light bulb as a sort of wick. Just as with the others it does not have the capacity to produce light. Instead it provides a place through which the oil, candle wax or electric current passes allowing it to shine. Oh yes we do need to continually go to Jesus to be sure our lamps are filled with the oil of His Spirit. But we also need to be sure that our wicks be kept trimmed and clean so that His flame can burn its brightest. When the light burns the best no one will even remember seeing that little wick. I am so glad that Jesus promised he would not put out a smouldering candle. Instead He snips off the old dark and hardened portions of my wick so I can burn my brightest for Him!

Let your light so shine before men, that they may see your good works and glorify your Father in heaven.
Matthew 5:16 NKJV