I'm pretty sure it was 1983 (Steve Young's senior season). I'd been in Provo for the 1982 season (my senior year), so, don't know if they showed the games as I was at all of them in person and didn't pay any attention to that stuff.
I also can't recall if they showed all home games in 1983 that year or if it wasn't until towards the end of the season. Any of you recall?