A set of street lights with no lights!?
As far as I can tell they were designed to include a light source, as the pole is hollow and the base cap has a slot for a wire...
For those of us that know how to solder, there is an easy fix... An LED!
I decided to splurge and use an addressable programable LED (a ws2812b)
I soldered a wire to each of the 4 pins and added a dab of hot glue.
Those in the know, might have noticed I didn't add a decoupling capacitor to the ws2812 neopixel.
I'll try to post a scopeshot of the output dataline to see what kind of trouble the IC might get into (or not) with the omission of the decoupling cap...