78 camaro wiring harness | eBay Find great deals on eBay for 78 camaro wiring harness. Shop with confidence. Skip to main content. eBay Logo: Shop by category. 78-81 CAMARO Z28 UNDER DRIVER SILL WIRING HARNESS INTERMEDIATE TAILLIGHT LIGHT (Fits: 1978 Camaro) Pre-Owned. $18. or 1978 - 1980 Camaro Classic Update Complete Wiring Harness Kit 1978 - 1980 Camaro Classic Update Complete Wiring Harness Kit Complete wiring system for your 1978, 78, 1979, 79, 1980 or 80 Camaro model. Camaro Central offers a complete wiring harness to bring your classic muscle car into the 21st century and beyond.