Niko, You're a valuable member of our community. I don't want to hear that you have been electrocuted if those wires disengage and touch the metal hood. I think the end caps might add only a small amount of money to the overall cost but they may ensure some safety. Does your life insurance policy include self-wired aquarium hoods?I just wrapped the wires around the pins of the PC bulbs and covered them with silicone.
Andrew Cribb