Want the best price for 10 ft Lamp Extension Cord - 16 Gauge? Shop for 10 ft Lamp Extension Cord - 16 Gauge at Grow Lights HQ! These cords plug into the female lamp cord receptacle on a Sun System ballast then into the male plug on the lamp cord coming from the reflector. Allows a user to increase the distance between their ballast and reflector by 10 ft. Match cord gauge to your existing lamp cord gauge.