automobile control cables of different colors has clear rules and standards in terms of identification specifications and functional distinctions. These color codes are typically used to simplify installation, maintenance and troubleshooting processes, ensuring the safety and reliability of electrical systems. The following is a detailed analysis of the identification standards and functional distinctions for cables of different colors:

CAN bus system

In the automotive CAN (Controller Area Network) bus system, cables of different colors are used to identify their functions. For example:

White cables are usually marked as "CAN_H", indicating the high-signal lines of the CAN bus.

Blue cables are usually marked as "CAN_L", indicating the low-signal lines of the CAN bus.

Red cables are usually marked as "V+", indicating a positive power supply.

Black cables are usually marked as "V-", indicating a negative power supply.

Gray cables are usually marked as "Drain", indicating the ground wire or signal ground.

2. Power supply and grounding

Red cables are usually used for positive power sources (such as the positive terminal of a battery).

Black cables are usually used for negative power supply or grounding wires.

White cables are sometimes also used for grounding wires.

Brown cables are usually used to control heat sinks or thermometers.

Yellow cables are usually used in ignition systems or to start engines.

3. Control signals and indicators

The blue cable is used to control the high beams and headlights.

Green cables are used to control the taillights and turn signals.

The grey cable is used to control the horn.

The orange cable is used for external turn signals and reverse lights.

Purple cables are used in electronic control devices.

4. Specific function cables

The orange cable is used to control the left and right directions and driver functions.

Brown cables are used to control the up and down directions and driver functions.

The yellow cable is used as the common wire for the motor.

Black cables are used for heating/lighting grounding.

The white cable is used to control the left and right directions of the passengers.

Blue/green cables are used to control the up and down direction of passengers.

White/blue cables are used for power supply.

The red cable is used for heating.

Green cables are used for lighting.

The blue cable is used for CB grounding.

5. Multi-core cables and color coding

The color coding of multi-core cables may not follow the above standards. Therefore, it is recommended to refer to the electrical circuit diagram manual to obtain specific colors and circuit numbers and the usage of each system.

In two-color cables, the main color is usually the color with a larger area, while the auxiliary color is the color with a smaller area.

Monochrome cables are usually of one color and are used for specific functions.

6. Special-purpose cables

The combination of red/white and orange/white is used to connect the recovery and input lines of the rearview mirror folding lines (on the opposite side of the motor).

The combination of white/black and yellow/white is used in some cases to connect one side of the switch.

The red/black combination is used for I/O 5V.

The blue/black combination is used for I/O 0V.

The combination of white and red is used for B+.

The orange/red combination is used for Z+.

Black and red are combined for A-.

The combination of white and red is used for B-.

The combination of orange and red is used for Z-.

7. International standards and brand differences

The DIN 47002 and DIN IEC 304 standards stipulate the basic color codes, including Bu (blue), Bn (brown), Ye (yellow), Gn (green), Gy (gray), Nt (natural color), Rd (red), Bk (black), Pu (purple), and Wh (white).

Different brands and models of vehicles may have different color coding standards. Therefore, when operating, specific circuit diagrams and product manuals should be referred to.

automobile control cables in different colors has clear rules and standards for identification specifications and functional distinctions, and these color codes are typically used to simplify installation, maintenance, and troubleshooting processes. However, as different brands and models of vehicles may have different color coding standards, specific circuit diagrams and product manuals should be referred to during operation to ensure correct connection and usage.