So I haven't spent much time looking at these but I assume the bulbs need replacing. How do you take the cover off the center lights that run down the cabin? I also have 1 round light by my sink. Sorry- I don't have pictures. I figured the covers would just pop off but didn't get much time to look because so hot in storage.

If they are anything like mine the cover should turn about a 1/4 turn and pop off.

^^ This and replace the bulbs with LED. The heat that is given off from the stock bulbs is insane. Just did my whole cabin for $8 in LED bulbs off flea bay.

That's for circular light. What about the rectangle one in center of cabin.

Sorry cant help, I have the small circular lights going down the center as well as the sides. If anything call Formula directly

Old school rectange with black ends switch on each side and clear lens in center? If so.... squeeze the lens in center and it comes out.

I updated the bulbs to leds in mine from superbrightleds.com. You can see in pic the housings sorry i do not have a direct shot of them.

Yes - they are similar housings. I will try that!

Does anyone know where to buy the unit? Preferrably an LED fixture?

LEDs ordered. Man the covers were a pain to pop off.

I need to change mine to LEDs as well but Ive had a hard time finding the correct bulb numbers to order without trial and error. Mine are unreadable.
Mine are like I.D.C.E has. Do you guys have any bulb numbers that would help?