1969 Mustang Wiring | CJ Pony Parts Wiring is, in short, what makes your ride run. At CJ Pony Parts, we can help you replace or upgrade all your 1969 Mustang wiring. We offer original replacements for wiring, upgrades and modifications — everything you need to improve your pony’s on-the-road or on-the-track performance. 69 mustang wiring | eBay 69 MUSTANG WIRING CLIP KIT. Brand New. $59. Buy It Now. Free Shipping. Fits 67-69 Mustang Painless Wiring 20121 22 Circuit Direct Fit Chassis Harness. 1969 69 Ford Mustang Full Color Laminated Wiring Diagram 11" X 17" See more like this. Mustang Hood Scoop to Parking Light Turn Signal Wiring 1969. Brand New.