I think I know the one you are referring to, but it wasn't the kid that was a cop. He was 'adopted' by a cop. The name of the show was 'Sidekicks.' Gil Gerard played the cop and Ernie Reyes Jr. played the kid.
Kid 'in' Africa - 1933 was released on: USA: 6 October 1933
Kid Power - 1972 was released on: USA: 16 September 1972
Prescott Kid - 1934 was released on: USA: 8 November 1934
The Sombrero Kid - 1942 was released on: USA: 31 July 1942
The Cop and the Kid - 1975 Daydream 1-10 was released on: USA: 1976
The Cop and the Kid - 1975 Pilot 1-1 was released on: USA: 4 December 1975
The Cop and the Kid - 1975 The Ballad of Joe 1-12 was released on: USA: 1976
The Cop and the Kid - 1975 The Hero 1-6 was released on: USA: 22 January 1976
The Cop and the Kid - 1975 The Weekend Guest 1-5 was released on: USA: 8 January 1976
One Day at a Time - 1975 Schneider's Kid 3-11 was released on: USA: 13 December 1977
The Fifth Estate - 1975 Just Another Missing Kid was released on: Canada: 7 April 1981 USA: December 1982
NBC Special Treat - 1975 The Tap Dance Kid 4-1 was released on: USA: 24 October 1978
That's My Mama - 1974 Clifton and the Kid 1-21 was released on: USA: 12 February 1975
The duration of Kid Cop is 1.25 hours.
Kid Cop was created on 1993-07-17.
CBS Children's Film Festival - 1967 Captain Mikula and the Kid was released on: USA: 4 October 1975