I have to use the wire I have. But Big Z is right, they make tiny thin wires now, and even circuit tape that can handle the load of LEDs. I lit an Enterprise D 20 years ago with 6 in florescent tubes, and grain of wheat bulbs... The florescent tubes could be on for 5 1/2 min before the thin copper wire powering them started getting hot enough to melt the styrene ... The tubes were in the nacelles of course, even in 1/1400, the nacelle supports were solid styrene, that I had to cut out channels for the wires.