When doing replacement or upgrading on 1986 – 2018 Ford Taurus X Sedan Wagon with halogen capsule headlamps HID, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.

Low Beam Headlight 2008 – 2009 H11
High Beam Headlight 2008 – 2009 9005
High Beam and Low Beam Headlight 1986 – 1991 9004
1992 – 2007 9007
Front Fog Light 1992 – 1997 893
2000 – 2007 899
1988 – 1991 H3-55W
2008 – 2009 H8/H11/H16
Back Up Light 1986 – 1988 1156
1989 – 2005 3156
2000 – 2009 921
Brake 1986 – 1987 1157
2004 – 2006 3057
1988 – 1991, 1996 – 2003, 2007 3157
1992 – 1995 3357
2008 – 2009 4057
Dome Light 1991 – 1993, 1998 – 2006 194
1994 – 1995 561
1988 – 1990 562
1996 – 1997, 2007 – 2009 578
1986 – 1987 912
Front Side Marker 1986 – 1988, 1990 – 1992, 1994, 1996 – 2009 194
1993, 1995 194NA
Front Turn Signal 1986 1157
1988 2357
1987 2357NA
1989 – 1993 3157NA
1993, 1995 – 1996, 2007 3457
1994, 1997 – 2006, 2008 – 2009 3457NA
License Plate 1996 – 2009 168
1986 – 1995 194
Parking Light 1986 – 1988 2357
1993 3157
1989 – 1991 3157NA
1992, 1994, 1996, 2007 – 2009 3357NA
1993, 1995, 1997 – 2006 3457
Rear Side Marker 1997 168
1986 – 1995, 1998 – 2009 194
1996 3157
Rear Turn Signal 1986 – 1987 1157
2004 – 2006 3057
1988 – 2003, 2007 3157
2008 – 2009 4157
Tail Light 1986 – 1987 1157
2004 – 2006 3057
1988 – 1991, 1993 – 1994, 1996 – 2003, 2007 3157
1992 – 1993, 1995 3357
2008 – 2009 4057
Luggage Compartment 2000 – 2005 578
Center High Mount Stop Light 1986 – 1994, 1996 – 2007 912
1987, 1993 – 1995, 2008 – 2009 921
Courtesy 1998 – 2006 161
1987 – 1988, 1993 – 1995 168
1992 194
1989 – 1991 74
Engine Compartment Light 1986 – 1987 194
1988 – 2007 906
Floor Console Compartment 1996 – 1997 194
Glove Box 2007 161
1986 – 2006 194
Interior Door 1996 – 1997 194
Map Light 1986 – 1987 105
1991 – 1994 168
1988 561
1995 – 2007 578
1989 – 1990 912
Radio Display 1986 – 1988 37
Trunk 1997 211-2
2000 – 2005 212-2
1986 – 1996, 1998 – 1999, 2006 – 2007 906
High Beam and Low Beam Headlight 2010 – 2012 9005
2013 – 2018 9012
Back Up Light 2010 7440
2013 – 2018 921
2011 – 2012 HPC16W
Brake 2010 – 2012 3157
Dome Light 2013 – 2018 194
Front Side Marker 2013 – 2018 168NA
2010 – 2012 194
Front Turn Signal 2010 3457
2011 – 2018 3457NA
License Plate 2011 – 2012 12844
2010 194
2013 – 2018 6418
Parking Light 2010 – 2012 3357NA
2013 – 2018 3457NA
Rear Side Marker 2010 – 2012 916
Rear Turn Signal 2010 – 2012 7440NA
Lower Tail Light 2010 – 2012 3157
Map Light 2010 – 2018 12961
Upper Tail Light 2011 – 2012 912
2010 916
High Beam and Low Beam Headlight 2010 – 2018 D3S
Back Up Light 2010 7440
2013 – 2018 921
2011 – 2012 HPC16W
Brake 2010 – 2012 3157
Dome Light 2013 – 2018 194
Front Side Marker 2010 – 2018 194
Front Turn Signal 2010 3457
2011 – 2018 3457NA
License Plate 2011 – 2012 12844
2010 194
2013 – 2018 6418
Parking Light 2010 – 2018 3357NA
Rear Side Marker 2010 – 2012 916
Rear Turn Signal 2010 – 2012 7440NA
Lower Tail Light 2010 – 2012 3157
Map Light 2010 – 2018 12961
Upper Tail Light 2011 – 2012 912
2010 916
Low Beam Headlight 2008 – 2009 H11
High Beam Headlight 2008 – 2009 9005
Front Fog Light 2008 – 2009 H8/H11/H16
Back Up Light 2008 – 2009 921
Dome Light 2008 – 2009 578
Front Side Marker 2008 – 2009 194
Front Turn Signal 2008 – 2009 3457
License Plate 2008 – 2009 168
Parking Light 2008 – 2009 3357NA
Center High Mount Stop Light 2008 – 2009 12961