this a very general question there are several differnt brands, you need to be very specific
make your own. then it will be the lenght you want
still what brand of light do you need the plug for? not the wattage
get 2 new plugs 1 male 1 female and a lenght of 3 wire cord ( new bulk ) and wire together.
you should be able to find them at a home depot or similar
I know myself what i need i just cant find it or the piece needed to make my own do you know were i could buy this bit needed .. I thought i could of just went on ebay and had 1 sent with no probs ..on the end with only 2 wires connect the ground to the body.
i know exactly what you need