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9006 or 9007
Low Beam Headlight Bulb Size: 9006High Beam Headlamp Light Bulb Size: 9005
you don't need a bulb
Typically the low and high beam are H7 bulbs. The day time running light (DRL) bulb is a P21W bulb (1156 is an acceptable substitute).
whats size bulb for 2002 cadillac deville headlight
9007 for your headlight
According to the owner's manual - headlight bulb # 9007
H13 for the Headlight and H11 for foglight.
H007
9004
A 1997 Mercury Sable takes the ( # 9007 headlight bulb )
the parts store will know what headlight bulb number you need and the size when you tell them the make and year of your vehicle.