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On the fuse box lid you will find a tab on the front side of the cover. Push on this tab lift up on the front side of the lid. Or you can grab the backside two tabs and pull out and up to pop them up and remove the lid. This will expose the red cover underneath simply pop the cover up and attach the positive cable there. If this still does not work you can always access the 12 V battery which is in the rear luggage compartment area on the right side simply remove the plastic panel and rear spare tire tool cover to access the 12 V battery.