The lights thing is a myth. HFA alternated between West and East back then. I wanna say 85 was the first year they switched to best record. Not true. '84 was the East's year for HFA, but they didn't let the Cubs have it because they couldn't have any night games. '89 was still alternating, and that year was the West's turn (The Cubs finished 93-69, while the Giants finished 92-70, but the Giants got HFA). Wrong on both accounts. '82's NLCS went 2 in St. Louis, then 1 in Atlanta(setup was 2-3). '83's went 2 in LA, then 2 in Philly(again 2-3). '89 went 2 in Chicago, 3 in San Francisco(set up was 2-3-2) I can't really figure out how HFA was determine after '84 as the West had it in '85 and '86, both years with inferior overall records. Head to head maybe? It was still alternating up until the wildcard was added (switch to three divisions) in '95 (well, '94, but '94 didn't have playoffs). I forgot about the 2-3-2 format, I just remembered the clincher was in SF, and apparently am just too familiar with the NBA style 7-game format. Even years gave the West HFA, odd years gave the East HFA.