When doing replacement or upgrading on 1971 – 1974 Volkswagen 411 412, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.

Low Beam Headlight1971 – 1973 H5006
High Beam Headlight1971 – 1973 H5001
Brake1971 – 1973 1157
Front Side Marker1971 – 1973 97
Front Turn Signal1971 – 1973 1157
License Plate1971 – 1973 97
Parking Light1971 – 1973 1157
Rear Side Marker1971 – 1973 97
Rear Turn Signal1971 – 1973 1156
Tail Light1971 – 1973 1157
High Beam and Low Beam Headlight1973 – 1974 6014
Back Up Light1973 – 1974 1156
Brake1973 – 1974 1156
Front Side Marker1973 – 1974 1895
Front Turn Signal1973 – 1974 1157
License Plate1973 – 1974 89
Parking Light1973 – 1974 1157
Rear Side Marker1973 – 1974 1895
Rear Turn Signal1973 – 1974 1156
Tail Light1973 – 1974 97