Too bad CW sales clerks aren't RVers. The fitting by the steps is low pressure. The grill will work on low pressure if you remove the regulator and replace it with a 1/4" QC fitting on the grill and the grill end of the hose. The fitting on the trailer is also 1/4" and your hose can be adaped to work on that with a 1/4" male fitting. All of the info you need is posted above.
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