have a light bulb go on in (one's) brain

have a light bulb go on in (one's) brain

To be suddenly struck with an ingenious or inspired idea, insight, or revelation. After nearly four hours trying to come up with a solution, I finally had a light bulb go on in my brain about what we needed to do. Hey, I just had a light bulb go on in my brain—what if we try rerouting the funds through your sister's company to avoid higher tax rates?
See also: brain, bulb, go, have, light, on
Farlex Dictionary of Idioms.
See also:
  • have a light bulb go on (in (one's) head)
  • a light bulb goes on in (one's) brain
  • a light bulb goes on in (one's) head
  • have a light-bulb moment
  • light
  • light bulb
  • have a light bulb go off (in (one's) head)
  • have a light bulb go off in (one's) brain
  • bulb
  • a light bulb goes off in (one's) brain