1967 Mustang Wiring | CJ Pony Parts From full factory wiring harnesses to fog light conversion kits, our selection of 1967 Mustang wiring and electrical parts includes the exterior and interior electrical components you’ll need to do the job right in the comfort of your own garage. 67 mustang wiring harness | eBay Find great deals on eBay for 67 mustang wiring harness. Shop with confidence. Skip to main content. eBay Logo: Shop by category. Voltage regulator to alternator Wiring Harness 67 Ford Mustang 390 428 with tach (Fits: 1967 Mustang) Brand New. $38. Buy It Now. Free Shipping. 11 Watching.