Built to last, copper wiring delivers optimal conductivity, superior mechanical strength, and excellent reliability for automotive integration.

More conductive, more resistant to vibration, and longer lasting over time, copper outperforms in every critical aspect of automotive wiring.

This is why Fortin uses only tinned copper wiring for its T-harnesses and accessory cables, ensuring reliability in real-world environments.

Copper is a conductive metal with well-known and stable electromechanical properties. In the automotive context, its benefits are numerous:

• Excellent electrical conductivity (about 40% higher than aluminum at the same diameter)
• Increased durability and better resistance to oxidation
• Superior mechanical strength
• Compatibility with existing connectors

Although copper has long been recognized as the industry standard, the use of aluminum as a primary wiring base in vehicles is growing rapidly.

Some manufacturers, aiming to cut costs, have introduced aluminum or copper-aluminum alloy harnesses in certain vehicle models. While this choice may reduce vehicle weight and material costs, it comes with several drawbacks:

• Susceptibility to corrosion
• Lower conductivity
• Weaker mechanical strength
• Shorter lifespan
• Riskier stripping process
• Less stable long-term connections

Fortin’s copper-based harnesses and accessories ensure compatibility with OEM wiring, whether copper or aluminum. However, any work on aluminum harnesses requires extra care, especially when joined with copper, to prevent issues related to corrosion, galvanic oxidation, stability, and long-term durability of connections.

Using a 100% quick-connect Fortin T-harness, with no wires to cut, remains the best non-intrusive integration solution. It guarantees stability, durability, and long-term performance, while preserving the integrity of the vehicle’s original wiring.