Thanks for the link to the Cool Site ... I watched a lot of TV in the old days , westerns , cop shows , private eye , army and action shows and had lots of questions about the arms they carried ,google is your friend:
http://www.imfdb.org/wiki/Adam-12
They state models 14, 15 and 36.
IMGDB is great for finding which firearms are used in various movies, tv shows, etc
CHiPs?
Smith 5906
The few pictures I could find from CHIPS show revolvers in their holsters.
Can't vouch for the authenticity, but here's an auction that is supposed to be of the gun Estrada wore in the show. It's a Colt Python.
https://entertainment.ha.com/itm/mov.../a/648-21013.s
I wonder whether the Cop from The Village People was carrying a S&W or a Colt???