Dome Light Turning On/Off Randomly (2013 FFH SE)

[Johnboy]

The driver's side dome light that's part of the sunglass storage pod has begun to turn on & off randomly on my 2013 Hybrid SE. I can still touch the light to turn it off, but it comes back on and shuts off at its own will. I suspect I have a bad ground somewhere, but I don't know how to track it down. I wonder if this is related to the dealer-installed illuminated sill plates that are wired to power by routing up the A-pillar, along the headliner and into the dome-light/sunglass pod above the rear view mirror. I popped the sill plate and related molding loose to fiddle with the wires there but couldn't cause the light to respond that way. I don't think it's related to the doors opening/closing because that would cause all lights to behave this way. Oddly enough, it's only that one single light doing weird things.

 

If any of you have any theories I could investigate, I'm all ears. Thanks for any suggestions you can offer.