What size fuse for radio/ heater- #13

Hi, my name is Devin. I am an auto repair expert with the Car Genius team here at RepairPal. For your H3, the #13 fuse slot for the radio and heater should typically use a 10-amp fuse. The fuse sizes can vary between models and trim levels, so it's always good to check the owner's manual for confirmation. Inside the fuse panel cover, there may also be a fuse diagram that lists the appropriate sizes next to each fuse number. If you need more advice, have any other questions about your vehicle, or would like to get connected to a RepairPal Certified shop near you, we have you covered. Give us a call at 877-913-1554, and we will happily help you out!