To find the correct fuse:
1. Consult your owner's manual: This is the best source of information. The manual will have a fuse box diagram showing the location of the fuse box(es) and which fuse controls the cigarette lighter (or power outlet).
2. Check the fuse box cover: Often, the fuse box cover itself has a diagram showing which fuse corresponds to which circuit.
3. Look for online resources: Search online for "[Your Ford Mondeo Year and Model] fuse box diagram". Many forums and websites dedicated to Ford Mondeos will have this information.
Without knowing the year and model of your Mondeo, I cannot give you the specific fuse number. Providing this information will allow me or others to assist you more effectively.