- Joined Jan 23, 2018
Instead of 14 of those expensive batteries you can use two AA batteries in series to give about 3 volts. and wire all of the 3 volt leds in parallel. That will take care of most of the lighting. They will not all be the same brightness, which may or not matter. If the batteries are not fresh than their internal resistance will limit the current quite well.See my last post. Just wire them all in parallel and use a 3V AC Adapter. It has to have enough power for all your leds. With 14 leds (or however many you end up with) and using a typical led current of 15mA, you will need a supply more than 14 x 0.015 or 0.6A. A 1A supply would work.
Woodland Scenics makes an led lighting system for model railroaders. Read about it in my link. It might help you.