These are of my son (now almost 18) in his carseats back in the early 90's. The first one I think was an Evenflo (obviously a OHS version) he was about 16 months in that picture. The second one is a Fisher-Price T-shield model and I believe he was 3 yrs old. As you can see, I always kept him in the center, I was fanatical about that, as I drove a 1988 Nissan Sentra, which was basically a little tin can on wheels. Shortly after that he was moved into a shield booster- but I don't have any pictures of that. (Again, these are pictures of the originals, the date stamps are from my Kodak camera!)
The harnesses were always tight- I think they retracted automatically and were super-snug.
