You do not have 2 radiators. You have 1 radiator and 1 AC condensing unit. They look similar and this mistake is common.
The radiator will have "tanks" where larger hoses will connect. These can be on the top and bottom or sides and will be made of plastic or metal.
Example below of a "Radiator"
The condenser will be an all metal unit that has smaller piping coming out of the sides or top and bottom.
Example below of an "AC Condenser"
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