To find it, you should:
1. Consult your owner's manual: This is the most reliable source. The manual will have a diagram of the fuse panel(s) and clearly indicate which fuse is for the rear defroster.
2. Check the fuse panel(s) in your vehicle: Most vehicles have one or more fuse panels, often located under the dashboard, in the engine compartment, or in the trunk/boot. The fuse panel cover usually has a diagram showing the fuse locations. Look for a fuse labeled "Rear Defroster," "Rear Window Defogger," "Heated Rear Window," or something similar.
3. Look for a fuse panel diagram online: If you don't have your owner's manual, you can search online for "[Your Car Make and Model] fuse box diagram." Many websites provide these diagrams. Be sure to specify the year of your vehicle, as fuse box layouts can change between model years.
Without knowing the specific make, model, and year of your car, it's impossible to give you a precise location.
