Wire Harnesses: Market Size & Forecast 2026

The global wire harnesses market sits at approximately USD 95 billion in 2025 (base year), growing at a 6.2% CAGR through 2032 to roughly USD 145 billion, with the supplier base structurally favouring vertically integrated Tier-1 assemblers anchored to OEM platform programmes. Automotive harnesses dominate at 65% of demand; EV platform content adds a 15-20% price premium versus ICE equivalents; and copper remains the single most volatile line, exposed to the new 50% US copper tariff (effective 4 June 2025) layered onto the 15% Section 122 surcharge (effective 22 February 2026). > **Analyst Take.** Our view: the call is to lock ICE harness index structures now and resist supplier requests to convert copper-indexed to fixed pricing ahead of the June 2026 tariff anniversary. The 15% Section 122 surcharge (post-Feb 2026) layered on top of the 50% Section 232 (post-Jun 2025) has not yet fully

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