Automotive Cable Buying Guide
Vehicle Applications We Support
Our range of automotive cables supports a wide variety of vehicle platforms, including:
- Passenger cars
- Commercial vehicles
- Motorcycles
- Specialist conversions
- Selected marine applications
We supply cables and associated components suitable for:
- Lighting systems
- Switching and control circuits
- Power distribution
- Earthing
- Trailer connections
- Battery systems
- EV-related installations
Our wider automotive wiring supplies include electrical wire, cable ties, heat shrink, junction boxes, connectors, terminals, and fuses to support safe and organised installations.
Cable Sizes, Insulation & System Compatibility
Automotive cables are available in multiple:
- Conductor sizes
- Insulation types
- Colour options
Common insulation materials such as PVC cables are selected for flexibility and temperature resistance. All cables are suitable for 12V and 24V systems, with higher-rated options available for specialist and high-voltage applications.
Colour Coding in Automotive Wiring
Red, blue, and yellow colour coding is commonly used for wire identification and safety:
- Red often indicates positive battery or starter cables
- Blue and yellow are used for specific wiring components and insulation options
Following OEM colour-coded wiring standards is essential to minimise risk.
Why General Wiring Cable Is Not Suitable for Vehicles
General-purpose or building cables are not designed for automotive environments.
Vehicle wiring is regularly exposed to:
- Elevated temperatures
- Vibration
- Oils and chemicals
- Moisture
- Mechanical stress
Automotive cables are engineered specifically to withstand these conditions while maintaining electrical integrity and long-term reliability.
Cable ties and junction boxes help organise and protect wiring, preventing damage and maintaining system performance.
Installation Best Practice
Correct installation is critical to long-term reliability.
Key considerations include:
- Secure terminations
- Appropriate crimping methods
- Effective insulation at all connection points
- Use of OEM wiring charts to avoid incorrect connections
Moisture must not come into contact with connections. Heat shrink should be used to provide insulation and waterproof protection.
Ground wires should connect to clean, low-resistance points to avoid noise interference. Proper terminals and secure crimping are essential for durable connections.
Understanding Automotive Cable Specifications
Modern automotive cables are classified by:
- Current-carrying capacity
- Insulation performance
- Thermal resilience (typically -40°C to +150°C depending on construction)
- Strand count
- Cross-sectional area
Matching cable size and construction to the application is critical for safety and performance.
In many OEM lighting and control harnesses, 0.5 mm² to 2.5 mm² FLRY-B cable is standard. Oxygen-free copper (OFC) is often specified for improved conductivity and consistency.
Specialised Automotive Cable Types
Different applications require different cable constructions.
High-Temperature Cables
TXL, GXL, and SXL are used in higher temperature zones. TXL is often preferred in modern compact systems due to its lighter weight and thin insulation.
General PVC Automotive Wire
GPT, HDT, and TWP are PVC-insulated wires suitable for general wiring and moderate temperature environments.
Shielded & Data Cables
Shielded cables protect against EMI. Twisted-pair cables maintain data integrity. Coaxial and fibre-optic cables are used in infotainment and communication systems.
Battery & High-Current Cables
Battery cables are designed for high current loads, ideal for battery-to-starter connections.
High-Voltage EV Cables
Electric vehicle systems use specialised high-voltage cables, often orange-insulated for identification and safety.
Automotive Cables for EV Charging
The growing EV market relies on specialised high-current automotive cables compliant with standards such as ISO 6722.
Cables are required for:
- Mode 1 charging
- Mode 2 charging
- Mode 3 charging
- Mode 4 DC fast charging
Reliable cable supply is critical in automotive manufacturing, where downtime can impact production efficiency.
Technical Support for Procurement Teams
As an established supplier to the automotive sector, we support procurement teams with:
- Product sourcing
- Manufacturer-aligned specifications
- Bespoke cable solutions
- A wide range of sizes, colours, and constructions
If you require assistance selecting the correct cable for your application, our team is here to help.