When doing replacement or upgrading on 2006 Lincoln Zephyr with capsule halogen 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 Headlight2006 H11
High Beam Headlight2006 H7
Front Fog Light2006 H8/H11/H16
Back Up Light2006 921
Dome Light2006 578
Front Side Marker2006 168
Front Turn Signal2006 4157NA
License Plate2006 6418
Rear Turn Signal2006 3157NA
Center High Mount Stop Light2006 921
Glove Box2006 194
Trunk2006 578
Low Beam Headlight2006 D1S
High Beam Headlight2006 H7
Front Fog Light2006 H8/H11/H16
Back Up Light2006 921
Dome Light2006 578
Front Side Marker2006 168
Front Turn Signal2006 4157NA
License Plate2006 6418
Rear Turn Signal2006 3157NA
Center High Mount Stop Light2006 921
Glove Box2006 194
Trunk2006 578