When doing replacement or upgrading on 1981 – 2011 Lincoln Town Car capsule halogen headlamps HID with, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.

Low Beam Headlight 1981 – 1989 H4656
High Beam Headlight 1981 – 1989 H4651
High Beam and Low Beam Headlight 1990 – 1994 9004
1995 – 2002 9007
Back Up Light 1981 – 1988 1156
1989 – 2002 3156
Brake 1981 – 1987 1157
1988 – 2002 3157
Dome Light 1989 561
1990 – 1991 578
1981 – 1988, 1992 – 1994 912
Front Side Marker 1981 – 1989, 1998 – 2002 194
1990 – 1994, 1996 – 1997 194NA
1995 916NA
Front Turn Signal 1981 – 1986 1157
1987 1157NA
1991 3057NA
1988 3157
1989 – 1990, 1992 – 1997, 1999 – 2002 3157NA
1998 3457NA
License Plate 1981 – 1989, 1992 – 1993, 1998 – 2002 168
1990 – 1991, 1994 – 1997 194
Parking Light 1981 – 1987 1157
1991 3057NA
1988 – 1990, 1992 – 1997, 1999 – 2002 3157
1998 3357NA
Rear Side Marker 1993 – 1996 168
1981 – 1989, 1992 194
Rear Turn Signal 1981 – 1987 1157
1988 – 2002 3157
Tail Light 1981 – 1987 1157
1988 – 2002 3157
Center High Mount Stop Light 1986 – 2002 912
Courtesy 1981 1445
1987 – 1990, 1993 – 2002 168
1982 – 1986, 1991 – 1992 912
Engine Compartment Light 1981 – 1986 89
1990 – 1997 906
1987 – 1989, 1998 – 2002 912
Glove Box 1981 – 2002 194
Map Light 1981 – 1989 105
1990 – 1991, 1993, 1995 – 2002 578
1992, 1994 912
Radio Display 1984 158
Trunk 1998 – 2001 212-2
2002 578
1981 – 1987 89
1989 – 1997 906
Low Beam Headlight 2003 – 2011 H7
High Beam Headlight 2003 – 2011 9005
Front Fog Light 2003 – 2011 9145
Back Up Light 2003 3155
2004 – 2011 3156
Brake 2003 3157
2004 – 2011 4057
Dome Light 2003 – 2011 578
Front Side Marker 2003 – 2011 194
Front Turn Signal 2003 3157
2004 – 2011 3457NA
License Plate 2003 – 2011 168
Parking Light 2003 3157NA
2004 – 2011 3457
Rear Turn Signal 2003 3157
2004 – 2011 4157
Tail Light 2003 3157
2004 – 2011 4057
Courtesy 2004 – 2011 912
Engine Compartment Light 2004 – 2011 906
2003 912
Glove Box 2003 – 2011 194
Map Light 2003 – 2011 578
Trunk 2004 – 2011 212-2
2003 578
Low Beam Headlight 2003 – 2011 D1R
High Beam Headlight 2003 – 2011 9005
Front Fog Light 2003 – 2011 9145
Back Up Light 2003 3155
2004 – 2011 3156
Brake 2003 3157
2004 – 2011 4057
Dome Light 2003 – 2011 578
Front Side Marker 2003 – 2011 194
Front Turn Signal 2003 3157
2004 – 2011 3457NA
License Plate 2003 – 2011 168
Parking Light 2003 3157NA
2004 – 2011 3457
Rear Turn Signal 2003 3157
2004 – 2011 4157
Tail Light 2003 3157
2004 – 2011 4057
Courtesy 2004 – 2011 912
Engine Compartment Light 2004 – 2011 906
2003 912
Glove Box 2003 – 2011 194
Map Light 2003 – 2011 578
Trunk 2004 – 2011 212-2
2003 578