When doing replacement or upgrading on 1973 - 1974 Volkswagen Thing, the bulb size guide is necessary for you to take the reference.

High Beam and Low Beam Headlight 1973 - 1974 H6024
Back Up Light 1973 - 1974 1156
Brake 1973 - 1974 1156
Dome Light 1973 - 1974 DE3423
Front Side Marker 1973 - 1974 T4W
Front Turn Signal 1973 - 1974 1156
License Plate 1973 - 1974 12821
Parking Light 1973 - 1974 12929
Rear Side Marker 1973 - 1974 T4W
Rear Turn Signal 1973 - 1974 1156
Tail Light 1973 - 1974 12821
Courtesy 1973 - 1974 DE3175

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