Get the Athearn Genesis ATHG67144 LED bulbs in HO scale. These medium - length bulbs are perfect for beacon and strobe applications. They measure 4.75mm and come in a pack of 12, offering great value for your model railway lighting needs.

Using these Athearn LED bulbs is easy. First, find the right spot on your HO - scale model where you want the beacon or strobe light. Gently insert the 4.75mm bulb into the designated socket. Make sure it's a snug fit but don't force it too hard. When handling the bulbs, wash your hands first to avoid getting oils on them, as this can affect their performance. Store the bulbs in a cool, dry place when not in use. If you notice any dimness or flickering, check the connection. These bulbs are designed to last, but treat them with care for the best results.