Bought 2 dozen of these bulbs to replace 9 old small 12v fluorescent bulbs. Each box of 6 packs comes with a hub to which all 6 lamps can be connected directly. Only a 12 volt connection is required. Individual lights are plugged into a hub with approximately 6 foot long wire. Also, you can't use a hub if you have a 12V source elsewhere and want to hook up a light or two. Simply unplug and connect directly to a 12V source. The light emitted by these LED bulbs looks like ordinary household light bulbs but is cool to the touch. Installation couldn't be simpler, simply drill a 2" diameter hole with a hole saw, thread your cord through the hole and insert the light. The connections are very simple. When installing in a 120v home you will need a 120v-12v converter which is not included. I'm glad it isn't, one of the reasons these headlights are cheaper than most. I'll try to post pictures when the installation is complete. Happy Camper, Idaho
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