I bought this kit years ago and then bought the lighting kit from Trekmodeler to go with it. I let it sit for a while and am finally getting back to it.
I bought the Paragraphix photo etch set and a few other extras. I started lining the inside of the hull with aluminum foil tape to block the light. Then I started running the wiring harness for the lights. Here's where I am at so far.
Here's the upper saucer with the lights installed:
I wanted sequentially flashing lights on the floor of the shuttle bay. I found this flasher unit online that runs the lights around in a circle:
I'll run some fiber optics from the LEDs to holes drilled in the floor. I'm using a cheap fiber optic light I got at 5 below for the strands: