Need a interior fuse panel diagram for a 2003 Ford mustang.

It will be in a fuse panel, there are usually 2 fuse panel /boxes under the steering wheel kick panel to the left, down underneath the steering wheel, or in the glove box area and then of course under the hood next to the battery usually, whatever you do look at te lid on the box of the one under the hood it should have a diagram of the correct location of the interior lights./ they are called courtesy lights sometimes, only replace that blown fuse with the same amperage as the one in there do not put a higher one in there, hope this helps

hope is helps

Go to this FREE Ford website to view or download the owners manual for your vehicle.
The fuse panel diagram is located in the roadside emergency section.

https://www.fleet.ford.com/maintenance/owners_manuals/default.asp

Interior lamps are powered through fuse # 7 and is a 15 amp fuse. It is located in the interior fuse panel. The lamps are gounded though ground # G400 which is located in the left rear cargo area.

Hi,this is the central fuse box diagram for your 20003 ford mustang.

Fuse no.1(20amp) in the under dash fuse panel is for lighter.
Fuse no.9(20 amp) in the under hood fuse panel is for the power point.

Fuse Box Diagram

Circuit Schematic

I trust that these are what you are looking for, they are screen captures of the requested information right from Ford.

I found this online. Hope it helps.

here you go
https://www.fleet.ford.com/maintenance/owners_manuals/default.asp

http://www.genuineservice.com/genuineservice/en/default?page=genuineService

Go to this website and pick owner guide on left task bar. Input your info and then pick owner guides.Your fuse information will begin on page 118.