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  2. Automotive battery - Wikipedia

    en.wikipedia.org/wiki/Automotive_battery

    Car batteries became widely used around 1920 as cars became equipped with electric starter motors. [10] The first starting and charging systems were designed to be 6-volt and positive-ground systems, with the vehicle's chassis directly connected to the positive battery terminal. [11] Today, almost all road vehicles have a negative ground system ...

  3. Motor vehicle registration - Wikipedia

    en.wikipedia.org/wiki/Motor_vehicle_registration

    The purpose of motor vehicle registration is to establish a link between a vehicle and an owner or user of the vehicle. While almost all motor vehicles are uniquely identified by a vehicle identification number , only registered vehicles display a vehicle registration plate and carry a vehicle registration certificate .

  4. Battery terminal - Wikipedia

    en.wikipedia.org/wiki/Battery_terminal

    These are used on some European cars, motorcycles, lawn and garden devices, snowmobiles, and other light-duty vehicles. Some batteries sizes are available with terminals in many different configurations, but two main configurations are: positive on left and negative on the right corner; negative on the left and positive on the right corner.

  5. DC connector - Wikipedia

    en.wikipedia.org/wiki/DC_connector

    In most vehicles, this means that the exposed terminal connects to the battery's negative terminal. Conversely, the positive terminal on a battery charger is exposed to mate with the concealed one on the vehicle side. (This is reversed on vehicles with a positive-ground frame, such as vintage British motorcycles.)

  6. Automobile auxiliary power outlet - Wikipedia

    en.wikipedia.org/wiki/Automobile_auxiliary_power...

    For the 12 volt systems, the center contact is the positive terminal and the shell is the negative terminal. Most automobiles connect the negative terminal to the frame of the vehicle (negative ground). 12 volt auto connectors are made to comply with a standard by Underwriters Laboratories for safety. UL2089 was developed to cover the ...

  7. U.S. auto safety regulator opens two new probes into ... - AOL

    www.aol.com/u-auto-safety-regulator-opens...

    The U.S. auto safety regulator has opened two new probes into potential defects related to Ford vehicles. In separate releases issued Friday, the National Highway Traffic Safety Administration ...

  8. Floating ground - Wikipedia

    en.wikipedia.org/wiki/Floating_ground

    Electrical equipment may be designed with a floating ground for one of several reasons. One is safety. For example, a low-voltage DC power supply, such as a mobile phone charger, is connected to the mains through a transformer of one type or another, and there is no direct electrical connection between the current return path on the low-voltage side and physical ground (earth).

  9. From champagne to speeches, would-be Trump Supreme Court ...

    www.aol.com/champagne-speeches-trump-supreme...

    Donald Trump’s return to power is creating a reality television-like competition for attention among a group of black-robed candidates – some of whom may hope to one day wind up on the Supreme ...