Ok, first of all Lincoln didn't make a 2003 Continental, there last year model was 2002, so I'm gonna guess you made a mistake on that. Second for your question yes, there is just one fuse box under the hood, its located on the drivers side to the right of the battery and brake reservoir and booster, its a black box that's about 2"x6", open that up and that's where you'll find mini fuses, maxi fuses and relays, if you want to know what each fuse is used for consult your owners manual.
2002 was the last model year for the Lincoln Continental The owners manual shows the wheelbase as being ( 109 inches )
The 2003 Navigator suspension module is located under the dash on drivers side above the parking brake pedal.
behind left wheel under the plastic molding...
where is the computer module located on a 2003 Lincoln LS
On a 2003 Lincoln Navigator : The check engine light / service engine soon light is a drawing of an engine located directly under the center of the tachometer
Check under the trunk liner for the factory build sheet.
On a 2003 Lincoln Aviator : The fuse panel is under the dash on the drivers side ( also , the power distribution box , which is " live " , is located in the engine compartment near the battery )
Under the hood in the aux relay box number 1, it will be marked C1008 and its the larger of the two relays on the left side of the box........
Under Bethune's leadership, Continental reported a net income in 2003 of $87 million on revenue of nearly $8.9 billion.
The 2003 Lincoln Town Car power control module is located on the firewall, in the engine compartment. The module will be on the drivers side of the firewall.
It will be located under the edge of the dash near the steering wheel, behind the ash tray, or behind the glove box.
It is located in the gas tank. Tank removal is necessary.