When doing replacement or upgrading on 1982 – 1988 Volkswagen Quantum, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.

Low Beam Headlight 1982 – 1986 4652
High Beam Headlight 1982 – 1986 H4651
High Beam and Low Beam Headlight 1987 – 1988 9004
Back Up Light 1982 – 1988 1156
Brake 1982 – 1988 1156
Dome Light 1982 – 1988 578
Front Side Marker 1982 – 1986 12256
1987 – 1988 P21/5W
Front Turn Signal 1982 – 1988 P21/5W
License Plate 1982 – 1988 T4W
Parking Light 1982 – 1988 1157
Rear Side Marker 1982 – 1986 12256
1987 – 1988 12821
Rear Turn Signal 1982 – 1988 1156
Tail Light 1982 – 1988 12821
Center High Mount Stop Light 1982 – 1988 194
Glove Box 1982 – 1988 DE3423
Map Light 1987 – 1988 12961
Trunk 1982 – 1988 DE3423