Once you have mechanically installed your new LED light bar, it is time to give it a steady supply of electrons so it has a steady supply of night vanquishing power. Learning how to wire and LED light bar correctly ensures reliability and avoids unsafe operating conditions or damage to your vehicle. Your car or truck battery may appear dull and non-threatening, but it is a potentially life-threatening storehouse of electrons looking for any way out at the speed of light. This greatly reduces the risk of shorting the battery, which is both exciting and very dangerous. Removing the positive terminal first risks you or a tool coming into contact with any metal connected to the negative terminal, which is most of the car.