It sounds like you are asking about the tongue weight (TW) calculation for selection of a trailer weight distribution hitch (WD) like the Curt TruTrack # C17500.
The weight of any cargo items behind the rear axle in the bed of a truck needs to be added to the TW of the loaded trailer when selecting a weight distribution hitch. This means cargo weight that is on the tailgate side of the rear axle. Often this will an item like a cooler or a generator.
The total TW of a towing system consists... view full answer...