Check for a blown fuse in the fuse box under the dash.
It is located on the driver's side to the left of the brake pedal on the firewall.
Fuse box located under dash drivers side .Fuse *5 15 amp Fuse
The fuse box on a 2002 Ford Mustang will eather be on the driver side lower dash, under the steering wheel, or under the hood behind the battery.
On a 1999 Ford Mustang : In the Power distribution box ( which is " live " ) located in the engine compartment ( # 14 is a 20 amp mini fuse for the fuel pump )
It is on the right side of the glove box it is kind of hidden.
The fuse box is above the driver's side kick panel, below the dash, to the left of the steering wheel.
The fuse box is located under the steering wheel closes to the drivers door in behind a black cover that reads fuses.
when you are driving it is under your left knee
look inside the fuse box inside of the car it will be a round fuse that is about the size of a quarter near top left of fuse box
The fuse box is located above the kick panel on the drivers side . Its really hard to see , its behind the wiper switch
fuse locator for a 1999 ford mustang