What is the connection method for a car's 12V power supply?

2 Answers
StSawyer
07/25/25 11:18am
Connection method for a car's 12V power supply: The vehicle's 12V power supply is located on the right side of the driver's seat, either in front or behind the storage compartment, or below the main screen. Connect the red wire and black wire of the 12V connecting cable to the corresponding red wire (red terminal) and black wire (black terminal) on the car's end. Finally, insert the power plug into the 12V power socket, and the indicator light will illuminate to indicate successful wiring. The following are the differences between a 12V power supply and a cigarette lighter: 1. Difference one: The cigarette lighter socket can heat the cigarette lighter filament, while the 12V power socket cannot. 2. Difference two: The 12V power supply will not be powered after the vehicle is turned off, while the cigarette lighter socket in some models continues to supply power even after the vehicle is powered off, allowing the use of the cigarette lighter when the vehicle is not powered.
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DelSamantha
08/11/25 8:01pm
As an ordinary driver with twenty years of experience, I believe the primary concern when connecting to a car's 12V power source is safety. Always turn off the engine before connecting to avoid the risk of power surges. Locate the cigarette lighter socket, typically found on the center console or near the armrest, and use a standard adapter plug. Ensure the central red pin aligns with the socket's positive terminal, and the surrounding metal ring connects to the negative terminal. Gently push it in until you hear a click, indicating it's securely fixed. Avoid using high-power devices exceeding 10 amps to prevent blowing a fuse. If the socket becomes rusty over time and affects the connection, clean the metal contacts with a dry cloth. Take your time during the process—rushing can lead to mistakes. I've seen beginners cause short circuits by improper insertion, requiring fuse replacement. Regularly inspect the wiring for signs of aging or damage to prolong its lifespan.
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