Chuck,
There is another older thread by Sean where he posts a YouTube video of how to disassemble the caboose. Sean didn't know about the LED wire but thanks to his video I was expecting it and just used a long flat blade screwdriver to pry the plug loose once I had the body loose. Sean shows you where to cut the cupola tabs. The best part is you don't have to poke a side window out. I hope this helps.