1972 Mustang Parts - Mustang Wiring Harnesses wwwasmustang›Parts›Electrical & WiringMustang Wiring Harnesses - Electrical Wiring Harness - Dallas Mustang - Order Mustang Parts Online!, The 1971 Mustangs and 1972 Mustangs are almost identical,. The Mustang BOSS 351 was not available in early ’72, but later in the year you could order the 351 HO. 1972 mustang wiring harness | eBay www›Search›1972 mustang wiring harnessFind great deals on eBay for 1972 mustang wiring harness. Shop with confidence. Skip to main content. eBay Logo: Painless Wiring 10123 12 Circuit Universal Wiring Harness (Fits: 1972 Mustang) Brand New. 5.0 out of 5 stars. 1 product rating - Painless Wiring 10123 12 Circuit Universal Wiring Harness. $591. Buy It Now.