I don't know for sure about the 83-85, but I imagine they are like the 86 and up. I didn't think I had one on my 86 either and asked a mech friend if he could install one. He asked what year it was and I said 86. He said "It has one" and I said" no it doesn't because I keep blowing past the 7500 red line!" He started it, opened the throttle all the way and it hit the rev limiter at 10,000 rpm! (Just like the V-Max) He said "I wouldn't go there too often, but it's there if you need it."
I only used it once, racing a Road Glide. Went to the limiter in fist, went to the limiter in second and looked down as I shifted to third. I was doing 103mph!!!