Where is the ACC wire located in a car?
4 Answers
Behind the keyhole ACC, the ACC power wire can be understood as the wire that has power when the car key is turned to the ACC position. Below is the relevant information about the ACC wire: ACC wire: The ACC wire is the power-on wire, meaning it connects to the ACC power source controlled by the key. The Chinese meaning of ACC is Adaptive Cruise Control power source, which is generally controlled by the car key and supplies power to components such as the car audio system. The Adaptive Cruise Control system is an intelligent automatic control system developed from the existing cruise control technology. Function of the ACC wire: ACC not only has all the functions of automatic cruise control but can also monitor the road traffic environment ahead of the car through sensors such as onboard radar. When it detects other vehicles ahead in the current driving lane, it will control the vehicle's throttle and brakes based on information such as the relative distance and speed between the vehicles, maintaining an appropriate safe distance between the car and the vehicle ahead.
As someone who frequently tinkers with car electronics, I should mention the location of the ACC wire. It powers accessories like the radio or charging ports when the key is turned to the ACC position. Typically, it's located near the steering column under the dashboard—where wiring harnesses are dense. The ACC wire might be red or have a yellow stripe, but colors vary by vehicle. Older models may hide it behind the instrument panel, while SUVs might place it in the fuse box under the glove compartment. When searching, it's advisable to use a test light or multimeter to check voltage, and disconnect the battery for safety. Don't be careless—touching the wrong wire could cause a short circuit and damage electronics. Vehicle models differ significantly, so consulting the manual is the easiest approach; before working, understand the specifications corresponding to your VIN. Overall, locating the ACC wire isn't too difficult—patience and safety are key to avoiding unnecessary trouble.
When I installed a dash cam myself before, I looked for the ACC wire, which is often hidden in easily accessible locations. In sedans, it's usually connected to the ignition switch wiring under the steering wheel; turning the key to the ACC position, you might spot red or yellow wires exposed in areas like below the steering column or behind the center console radio. But don't rush—I've used simple tools like a test light with ground detection before. The fuse box is also a good starting point; just check under the small storage compartment for a fuse labeled AC or ACC. Be careful with circuit stability during modifications—once I forgot to disconnect the power, and the audio system burned out, but luckily a professional shop fixed it. I recommend not blindly attempting this, especially if you're not familiar with cars. Checking online resources or consulting a mechanic is safer.
When I first started learning about cars, I realized the ACC wire position is crucial, as it powers up when the key is turned to the ACC position. Specifically, in most vehicles, you can locate the wiring harness in the steering column area or check the car's fuse box for the position labeled 'AC.' The wire might have a distinctive color, like red stripes. It's advisable not to tamper with it randomly—consulting the manual is the safest approach. Online tutorials also provide simple steps, but safety always comes first.
