I have a landscape lighting unit that can turn on whatever is wired into it for 2, 4, 6, or 8 hours from when the photo cell trigers the unit. My problem is that the unit needs a minimum load ot 20 watts to operate (max 300W). It puts out 12 or 14 volts. I want to use a 14v. relay to turn on a nouber of light which would far exceed the 300W max. If I can figure what the relay draws how do I figure what to add in parallel with the relay to add up to 20 watts to make the unit work. I guess it would be a resistor of some sort. But how do I figure the ohm rating and power requirement?