The switch came from a cannibalised strip light, and the R/C light system came from Ebay years back.
Here's a link:
https://www.ebay.co.uk/itm/4x-All-C...s_RadioControlled_JN&var=&hash=item3cd057d931
Now that is NOT what you need. You'll need either a 5-piece 10mm LED system in white or a 10-piece 5mm LED system in white.
Just contact that seller, tell them what you need and they will make you up a custom lighting harness(You will need NO MORE than 80mm of cable with each LED, as any more will just take up valuable room in there).
I used three similar lighting systems for a custom Warhammer Arvus Lighter dropship i made for a customer in the US a year or so back. One 10-LED superbright white system for the headlamps, dashboard displays and interior roof lights, one 6-piece strobing system for the nav lights(Flashing red top and bottom, and strobing white on the trailing edges of the wings, plus fixed red/green nav markers on the leading wing edges), and finally a set of 10 LED lights in the engines.
LED systems are easy to work with and run on low power. Perfect for our uses.
I scratchbuilt this entire thing in 1/20 scale from sheet styrene and model kit greeblies:
https://www.youtube.com/watch?v=YUb8CuseVEc