Apparently, many of you here know of me, because I keep getting referrals for wiring harness refurbishments. I'm not here to hawk my products, but I can answer almost any electrical question these old beasts have. I may even have some of my own questions for you from time to time.
At any rate, I'm Midlife, aka Randy Jacobson, owner of Midlife Harness Restorations. The '69 model is the most popular harness to work on, accounting for 35% of all vintage Mustang years. Number 2 year in popularity is the 1970. I figured I might as well join the forum specializing in the most popular year Mustang, eh?
Randy
http://midlife66.com/harnesses