Dear car enthusiasts, I'm having an issue with my 2013 Sharan. The electric door buttons on the B-pillars of the middle doors have become loose and fallen off. I wanted to buy a pair from Taobao, but the seller asked if I needed "positive touch" or "negative touch," and I'm completely confused. Is there anyone who can help explain? 🙏

Is there a pre-installed loudspeaker wiring harness and plug for the rear doors in the 2017 manual version of the Hyundai Reina? I'm considering adding a pair of speakers and would like to know if it's ready for installation.

After driving a Tesla, I've become addicted to electric cars and hardly touch gasoline cars anymore. I'm thinking about switching to a HiPhi. What's the real-world range of this car? Does it have many minor issues?

Chery Arrizo 3, sometimes there's a noise above the glove box. When driving, it usually stops, but after turning off the engine, closing the car door might cause the noise again. There's also a similar sound inside the passenger side B-pillar seatbelt. I want to take apart the dashboard to see if something is loose inside, but I'm not sure where to start. I've previously removed the bumper to install a loudspeaker and added a central control screen with a rearview camera. But I'm not sure how to start with the area above the glove box.

Dear car enthusiasts, I'm having an issue with my 2013 Sharan. The electric door buttons on the B-pillars of the middle doors have become loose and fallen off. I wanted to buy a pair from Taobao, but the seller asked if I needed "positive touch" or "negative touch," and I'm completely confused. Is there anyone who can help explain? 🙏