I don't think I have pictures of the back specifically but the route was:
Started on one side of the engine framing, all the way across, inside through the body then around the round section holding the bottom gun turret, then along the front bottom edge, back into the body and around the top round section of the gun turret, back into the body into the bridge and across the ceiling ending there.
The LED string itself had adhesive backing, so I'd put it in place, remove a section of the adhesive cover, attach it, then do another section. It was probably 3-6" at a time, so not fast or easy. I had to take off a bunch of the ship panels - super easy - to get at some of the portions. My goal was that you couldn't see the LEDs directly from most viewing angles and was mostly successful
The LED string was ~$60 and it was a silly amount of work but I have it sitting over my left shoulder during conference calls and people ask about it constantly so it was fun.
Other pics: https://x.com/CaseySoftware/status/1757069749501018411
Edit: Just realized you can see the string here: https://x.com/CaseySoftware/status/1980269018511794422
Ah I see. What I've been trying to do is integrate the LEDs into specific pieces instead, so I've mostly been using individual ones rather than strips. I was actually inspired by a Lumibricks set for my method of routing the pieces. Currently I'm trying to add lights to the modular Cinema set, which I think would be great, and I've had to resort to cutting out parts of bricks to get things routed around.
> The LED string was ~$60 and it was a silly amount of work but I have it sitting over my left shoulder during conference calls and people ask about it constantly so it was fun.
My first experiment with adding lights was to the Technic Porsche set, and interestingly, in meetings it doesn't get blurred as much as the rest of the background (probably due to the lights I put in it) so I often get asked about it as well.
Thanks for sharing!