In anticipation of building codes mandating that deck stairs require lighting, Trex came up with a plug-and-play system of LED lights that recess into neat holes (easy to cut with a Forstner bit) and which are built into post caps. LEDs burn cool, eliminate the issue of lights dimming at the end of the line, and come with a seven-year warranty. All in all, a nifty system.
From $75 for a four-pack LED riser kit.Trex DeckLighting
, by Trex.