'Hidden' radio fuse location | DODGE RAM FORUM Any other ideas on this. 2012 Ram 2500 Longhorn with the 430N radio. I accidentally touched the terminals posts together while changing the Auxiliary battery (the second battery, the one on the passenger side). The radio longer works I checked the 30 amp fuse in the fuse box labeled Radio/amp. I checked all the other ones in the fuse box.
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