10-Pack of Pre-Wired 5mm Bright Blue LED Light Bulbs These pre-wired LED bulbs are perfect for creating your own custom LED setup! Use them to make headlights for your cars and trucks, wing lights for your planes Can be powered using your receiver, the handy Common Sense RC Power Tap, or the balance or discharge leads on a 2S or 3S lipo Easy-to-use -- simply solder on the connector of your choice, connect to your power source, and you're done