To find it:
1. Locate the underhood fuse box: This is usually a large black plastic box near the battery.
2. Consult your owner's manual: The manual will have a detailed diagram of the fuse box showing the location of each fuse, including the one for the cigarette lighter (often labeled "Power Outlet," "Accessory Power," or something similar).
Without your owner's manual, providing the precise location is difficult. The fuse box cover usually has a diagram printed on the inside of the lid.