When doing replacement or upgrading on 1965 – 1972 Jeep M151, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.

High Beam and Low Beam Headlight1965 – 1972 6014
Back Up Light1965 – 1968 1073
1972 199
Brake1965 – 1968 1034
1969 – 1972 198
Dome Light1965 – 1968 212-2
Front Side Marker1972 194
Front Turn Signal1965 – 1968 1157
1969 – 1972 199
License Plate1965 – 1968 89
Parking Light1965 – 1968 1157
1969 – 1972 198
Rear Turn Signal1965 – 1968 1034
1969 – 1970, 1972 1156
1971 199
Tail Light1965 – 1968 1157
1969 – 1972 198
Courtesy1972 211-2
1969 – 1971 212-2
Glove Box1965 – 1968 1891