Home Improvement Questions? Ask a Handyman for Answers ASAP
You could use the wiring to the light and leave the lightwitch on all the time if you can.
Are you able to remove the light fitting and show me the wiring on the backplate?
You could wire the switch together behind the switch so it is always on?
You could then fit your unit next to the light fitting?
You could also use a push switch which holds the light on for certain amount of time?