KSR
What are you using to control the pool light and does the light get "stuck" when you turn the module OFF?
If so, is it one of those new LED pool lights? if so (again) it is likely the local sense current of the controlling module is great enough to keep the LED(s) lit even when the module is OFF.
On older appliance modules you could cut a diode and kill the sensing current (which is not to be confused with cutting the jumper and disabling the sense function).
Like Bill said, your plea is a little light in the detail category.