Hey, guess it was too specific an item? From the searching around I did (and to be honest I'm sure you knew about every site I came across prior to posting as I didn't even know there was an aftermarket for lightbars in the first place!) it looks like most of them are geared more towards more modern police light kits.
If I may though, what are you making? I'm curious what kind of 1/24-1/25 scale Emergency Vehicle you're putting together.
If you were going to scratch one, may I suguest building up the shape in something solid and then vacume forming clear plastic over top? As far as I can figure, it'd make adding all the internals a lot easier, you could even custom wire it with some little LEDs! Looking at the video of the lightbar in question, I'd say it's definitly one of the simpler ones.
I run EMS and I think we have something like an older Code 3 product or... well I'll just show you a picture, I'm sure you'd be able to ID it
It's got the two amber in the back replacing the two white scene lights up front. On second thought it's probably just made by Whelen, I know the sciren kit is.
Now that I know they make after market for this kind of think I'm starting to think a scale model of our Expedition is doable after all! So if nothing else comes from your quest for a lightbar, at least you've inspired someone else.
Hope the holidays were good for you, and I like your screen name. Cussler is one of my favorite authors