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I was under my new to me '15 and noticed there are 2 plugs/jacks(?) on the frame right where the loom splits out to go to the trailer connector and then there are 2 different connectors further up the frame between the fuel tank and the filter assembly. Anyone know what they are for?
 

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One of the connectors by the fuel filter might be for lighted running boards.

If one of the connectors by the trailer connector has an orange cap, it is for the camera harness. The other might be for the rear marker light assemble installed on the DRW trucks.

Without wire colors or photos, might be hard to actually determine what the wires are for.
 
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