When doing replacement or upgrading on 1958 – 2005 Cadillac DeVille, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.

Low Beam Headlight 1987 – 2005 9006
1975 – 1986 H4656
1958 – 1974 H5006
High Beam Headlight 1987 – 2005 9005
1975 – 1986 H4651
1958 – 1974 H5001
Front Fog Light 2000 – 2005 880
1986 881
1998 – 1999 893
1987 – 1990 H3-55W
Back Up Light 1958 – 1988 1156
1994 – 1999 2057
1989 – 1993 3057
2000 – 2005 3157
Brake 1959 1034
1958, 1960 – 1982 1157
1983 – 1988, 1994 – 1997 2057
1989 – 1993 3057
1998 – 1999 3157
Dome Light 1958 – 1960, 1963 – 1964, 1975, 1980, 1984 1004
1971 161
1962 211-2
1965 – 1970, 1976 212-2
1978 – 1979, 1981 – 1983, 1989 – 1993 562
1961, 1977 578
1972 – 1973 90
1985 – 1988 912
Front Side Marker 1978 – 1984, 1990 – 2005 194
1974 – 1977, 1985 – 1988 194NA
1989 24
Front Turn Signal 1958 – 1982, 1986 1157
1983 – 1985, 1987 – 1993 2057
2000 – 2003 3157
1994 – 1999 3157NA
License Plate 1981, 1983 – 1984 161
1973, 1978 – 1980, 1982, 1985 – 1999 194
1958 – 1970 67
1971 – 1972, 1974 – 1977 97
2000 – 2005 PC168
Parking Light 1958 – 1960, 1963 – 1964, 1967 – 1982, 1986 1157
1965 – 1966 1157NA
1985 194
1983 194NA
1984, 1987 – 1993 2057NA
1994 – 1998, 2000 – 2005 3157
1999 3157NA
1961 – 1962 57
Rear Side Marker 1977 1157
1972 – 1973 168
1968 1895
1969 – 1971, 1974 – 1976, 1978 – 1989, 1994 – 1999 194
1990 – 1993 24
Rear Turn Signal 1958, 1962 1034
1959 – 1961, 1963 – 1982 1157
1983 – 1988, 1994 – 1997 2057
1989 – 1993 3057
1998 – 1999 3157
Tail Light 1958 – 1963 1034
1964 – 1982 1157
1983 – 1988, 1994 – 1997 2057
1989 – 1993 3057
1998 – 1999 3157
Front Inner Turn Signal 2004 – 2005 3157NA
Front Outer Turn Signal 2004 – 2005 12961
Center High Mount Stop Light 1986 – 1999 1156
Courtesy 1980 – 1981 161
1971, 1983, 1989 – 1992, 1996 – 2005 168
1977 – 1979, 1984 – 1988, 1995 562
1993 – 1994 74
1958 – 1970, 1972 – 1976, 1982 90
Engine Compartment Light 1973 – 1981 1003
1988 105
1982 – 1987, 1989 – 1990, 1993 1156
1991 – 1992, 1994 – 2005 561
1962 – 1970, 1972 89
Glove Box 1971 1445
1970, 1972 – 1991, 1993 1816
1964 – 1969 1895
1992, 1994 – 2005 194
1958 – 1963 57
Map Light 1982 – 1988 1004
1994 – 1999 168
1962 – 1964 212-2
1974 – 1981 562
2000 – 2005 578
1967 – 1971 89
1958 – 1960, 1965 – 1966 90
1989 – 1993 906
Radio Display 1967 – 1971 1816
1958 – 1962 1891
1963 1892
1964 – 1966, 1972 – 1977, 1981 – 1983 1895
1979 – 1980 194
Stepwell 2000 – 2005 194
Trunk 1973 – 1991, 1995 1003
1992 – 1994 1156
1971 168
2000 – 2005 211-2
1996 – 1999 561
1958 – 1970, 1972 89