I doubt that any sport model trailers had the option for hydraulic/electric brakes, so the setting would be electric.
The gain adjustment is based on the weight and brakes on the trailer. Your trucks owners manual might have more information, but the basic adjustment is to set the gain as high as you can with out locking the brakes.
best to take your AS and TV to a reputable tallier dealer and have them set it up.
the better ones will explain the process so that you can do any future changes.
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