Most Rover 75's use H7 for dipped beam and H1 for main beam headlights.
low beam headlight bulb type: 9006
The 2000 Ford Mustang owners manual shows headlight bulb ( 9007 )
Low Beam Bulb - Type H7 HalogenHigh Beam Bulb - Type H1 Halogen
Changing the headlight bulb in a Jaguar X-Type vehicle is easy. Simply find the bulb located on either side of the car near the wing. Unscrew the bulb and replace it with a new one.
These are H7 bulbs.
#9006.
H7
Pop the bonnet and find out
9006 for the low beam 9005 for the high beam
To replace a headlight bulb on a 2006 Jaguar X-Type, first, ensure the vehicle is turned off and the keys are removed. Open the hood and locate the back of the headlight assembly. Disconnect the electrical connector from the bulb and remove the bulb by turning it counterclockwise. Insert the new bulb, making sure not to touch the glass, reconnect the electrical connector, and test the headlight before closing the hood.
Icluding aftermarket headlights??
H7