Hi, thank you for your question.  Our 2-Packs of Pico LEDs include one 1:2 adapter.  So you could buy a 2-pack of Pico LEDs in the color you needed, and you'll get a 1:2 adapter included.  If you need to light a small model, you might also look at our Headlight Kit, which can be used with any small setup.  It includes a battery pack, two warm white Pico LEDs, and a 1:4 adapter.  We've had many people use this for small buildings and other things besides just vehicles.