On Tuesday, February 21, 2017 at 8:10:05 PM UTC-5, Tim Daneliuk wrote:
I know this is OT, but there is sufficient genius here that I'd take a stab
at this.

So the latest project is for a home where some rocket scientist
remodeled it (pretty well, actually), but failed to put a wall
switch in the laundry room. This is roughly a 10x10 area with the lamp
(a standard hallway style glass dome) more or less centered on it with
a pull string. This is untenable for the homeowner when it is dark.

I've tried the eSenLite - in fact two of them - and they have the same
defect - the delay timer to shutoff simply does not work. It either
shuts down after a few seconds or stays on for many minutes - the middle
adjustments don't work.

So - ideally - what I need is something that will fit into the existing
fixture as a bulb that will turn on- and off, strictly based on motion,
not ambient light. Failing that, a quality fixture replacement is not
out of the question.

Ideas?

If it were me, I'd replace it with a standard fixture and run a switch leg down to a wall switch.
I got tired of the pull chains in my closets and installed switches in them all.

It you don't want to fish wires, you could use surface mount wiring.

This should get you started...

http://www.homedepot.com/p/Legrand-W...W2-S/202264859