1990 gt mustang wiring harness | eBay www›Search›1990 gt mustang wiring harnessFind great deals on eBay for 1990 gt mustang wiring harness. Shop with confidence. Skip to main content. eBay Logo: Shop by category. ★★1987-93 MUSTANG OEM MAIN POWER LOCK SWITCH WIRING HARNESS DASH COBRA GT LX★★ (Fits: 1990 Mustang GT) 1990 Mustang Parts - Mustang Wiring Harnesses wwwasmustang›Parts›Electrical & WiringMustang Wiring Harnesses - Electrical Wiring Harness - Dallas Mustang - Order Mustang Parts Online!, The 1990 Mustangs received very few changes. Ford celebrated the 25th anniversary of the Mustang with a small Pony on the passenger side of the dash. The “7-up” Mustang Convertible, is a favorite among collectors.