Here's the official "long answer". There are many fused points for you to check, but give it a try. Remember, observe electrical safety!
Cigar Lighter Supply
Circuit supply
A feed from the battery positive terminal is connected by a R wire to the engine
compartment fusebox, where it passes to fusible link 8 and fusible links 1 and 7
which are connected in series. The feed from fusible link 7 is connected to the
auxiliary circuits relay mounted in the engine compartment fusebox.
The feed from fusible link 8 is connected to the passenger compartment
fusebox on an NW wire and from the fusebox to the ignition switch on an N
wire.
Ignition switch supply
When the ignition switch is in position I or II, the feed from fusible link 8 flows
through the ignition switch) to the passenger compartment fusebox on an LGW
wire. The feed continues through fuse 26 and is connected by an LG wire to
the auxiliary circuits relay. The feed passes through the auxiliary relay coil and
is connected to earth header C0018, via header C0285 LHD/C0288 RHD on a
B wire.
The auxiliary circuits relay is energised which closes the relay contacts. This
allows the feed from fusible link 7 to pass through the relay contacts to the
passenger compartment fusebox on a WG wire. The feed then passes through
fuse 15 and is connected, through header C0286 LHD/C0291 RHD to the cigar
lighter on an LGW wire. The cigar lighter is connected through header C0286
LHD/C0288 RHD to earth header C0018 on a B wire.
Were is the cigarette lighter on IST 2003 model?
No
The fuse for the cigarette lighter ------------------------------------------------------------------------------------------------ In a 2003 Ford Expedition : ( mini fuse # 41 is a 20 amp fuse for the cigarette lighter and OBD II diagnostic connector )
The fuse for the cigarette lighter in the 2003 Saturn Ion is number 15A. It is located in the fuse box under the dashboard of the vehicle.
( # 41 ) is a 20 amp mini fuse for the cigarette lighter , OBD II diagnostic connector in a 2003 Ford Expedition
the one that is blown.
It is on the dash board!
On a 2003 Lincoln Navigator : ( mini fuse # 41 is a yellow color 20 amp fuse for the cigarette lighter and OBD II diagnostic connector )
( # 24 ) is a blue color 15 amp fuse for the cigarette lighter and OBD II in a 2003 Mercury Mountaineer ( under the instrument panel )
In a 2003 Ford Expedition ( fuse # 41 is a yellow color 20 amp mini fuse ) for the cigarette lighter and OBD II diagnostic connector
When changing the spark plugs for the first time it is important to have a diagram. A spark plug diagram of a 2003 Land Rover Discovery can be found in its maintenance manual.
Fix the lighter? HA! Just buy a new Jaguar.