Brake fuse should be in the cab, ground should be found in one of those locations, however I would recommend tracing the wiring back starting at the DRAC and looking for split insulation or any other indication of damage.
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Ok great thanks, I'll start by checking the wiring at the dracBrake fuse should be in the cab, ground should be found in one of those locations, however I would recommend tracing the wiring back starting at the DRAC and looking for split insulation or any other indication of damage.