Depending on what you want these work well for me on the interior of structures. I've got mine on a separate 12v supply for lighting accessories. I also use these to add lighting to my PRR caboose. Added a few roller pickups and they work wonderful on both AC/DC. No problems with 18V DC or 18VAC with a Z-1000. I use 3M mounting tape 2-side thin and it makes these very versatile IMO.
I think these might be more special application but I thought they were worth sharing. Thanks.
Listed as: DD00WM 20pcs Pre Wired Warm White SMD 3528 Led Lamp Light Set 12V ~ 18V