This is an Autolite voltage regulator with part number C5TF-10316-A, typically used in Ford vehicles from the late 1960s to early 1970s.It is designed for use with a negative ground electrical system, indicated by the "NEG" marking on the cover.The regulator features a distinctive blue cover with yellow lettering and has terminals marked I, A, S, and F.

Part # as far as I can tell is 7J5C

C5TF-10316-A