Working on a 2017 114sd that was factory wired up for plow lamps. Have no power to the marker lights of either plow lamp. Plow marker lamp relay and fuse are good on the relay box on the fender. Wondering if power goes through relay to fuse then to a body controller under cab? I assume the plow lamps are controlled by the body controller. Even a wiring schematic would be usefull. My dealer sent nothing usefull. Vin is JHJM4979. Any help is appreciated.
Marker light issue in plow lamps.
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by bowtieboy77, Oct 24, 2024.
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