Have you ever seen that kind of talking car rear screen? While waiting at a red light, a "keep distance between cars" animation suddenly popped up, making the driver behind him dumbfounded. But you know what? Last year, there were more than 200 cars in Shenzhen alone because​ ​Illegal installation of LED screens​ ​Points and fines were deducted. Today we are going to talk about this cool yet dangerous gadget and how to install it reliably.

(The wild way for newbies to gain fans quickly is the same as randomly installing car screens - it looks like a shortcut but is actually very risky! )

​​1. Three restricted areas and life-saving areas​​
A traffic police friend secretly told me that they mainly look at three locations when checking a car:

• ​​Absolutely forbidden area​ ​: Inside the windshield (3 points will be deducted directly if the line of sight is blocked)
• ​​High-risk minefield​ ​: 10cm around the license plate (suspected of tampering with the license plate)
• ​​safe zone​ ​: The upper 1/3 area from the lower edge of the rear window (must ensure light transmittance >70%)

There is a real case: An Internet celebrity installed an LED screen on the spare tire cover, and debris flew during a rear-end collision, causing a secondary accident. Now regular modification factories require​ ​Screen height from the ground ≥ 45cm​ ​, and avoid dangerous parts such as the fuel tank cap and charging port.

​​2. If the parameter selection is incorrect, see you at the car repair shop every day.​​
Don’t look at the palm-sized screen, choosing the wrong parameters will burn the circuit in minutes:

Here’s a little trivia: Really high-end automotive LED screens can withstand​ ​-30℃ to 80℃℃​ ​Due to extreme temperatures, a car screen in Northeast China was frozen in ice last year, but it still displayed normally after thawing. However, the power cord of this kind of screen must be wrapped with aviation-grade silicone, and this material is simply not available in ordinary modification shops.

​​3. The hidden dangers of wiring​​
Most cases of spontaneous combustion occur on power cords:

• ​​fatal operation​ ​: Directly connected to the reversing light circuit (the power will burn if the power exceeds the standard)
• ​​Correct approach​ ​: Separate wiring and installation​ ​overload protector​​
• ​​hidden mechanism​ ​: The physical switch must be retained (power can be cut off in seconds when inspected)

Let me teach you how to detect soil: After installation, play the video at maximum brightness and turn on all the electrical appliances in the car at the same time. If the power cord is hot to your touch, rework it immediately! Regular modification should use​ ​Automotive grade flame retardant wire​ ​, it will automatically trip even if there is a short circuit.

​​4. Content control costs lives​​
Last year, a driver was convicted of obstructing driving because the screen showed "There's a Beautiful Girl Ahead". Please remember these red lines:

1. No dynamic images (GIFs and videos are allowed)
2. No more than 6 Chinese characters can be displayed at a time
3. The color cannot imitate the police red and blue flash.
4. Content updates must pass​ ​Physical button operation​​

There is a cool operation that is legal: a car enthusiast set the screen to​ ​Abnormal tire pressure alarm display​ ​, when waiting for a red light, the car behind saw the prompt "right rear wheel leak", which really avoided a tire blowout accident.

The editor has personally seen the most outrageous modification: someone replaced the entire rear windshield with an LED screen. As a result, the rearview mirror was completely invisible on rainy days. To be honest, many so-called "car-grade LED screens" on the market today have not even undergone the most basic vibration test. If you really want to modify it, remember to ask the store to bring it out​ ​Electromagnetic compatibility certification​ ​and​ ​Seismic test report​ ​——These two documents can screen out 90% of fake manufacturers.

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