[JRTJH]

If you have an "automatic leveling system" installed on the trailer, then the front landing gear jacks will operate independently and you "should have control of their operation" at the leveling system control panel.

If your trailer does not have an automatic leveling system, then open the front compartment and take a look at the top of the roadside landing gear. You'll see an electric motor mounted on the top of the jack beam. Attached to that, if you see a 3/4" square bar that runs to the top of the curbside landing gear beam, then the two are connected by a single motor and you do not have the capability to control each jack independently. That said, on many trailers, there are several switches for lights also mounted on the underside of the front overhang. On my trailer, there are two light switches and the landing gear switch (that controls both landing gear legs) mounted under the overhang.

Essentially, unless you have an automatic leveling system, chances are that both landing gear are connected by a "transverse drive bar" and operate as a single unit. Most Keystone fifth wheels in the "mid level price range" that were built before automatic leveling systems became popular, have a single switch that controls both landing gear legs which are driven by a single motor and a transverse drive bar.

There's a "potential danger" that you face if you "modify an older trailer with indpendently driven landing gear. Many of the older frames were not braced for that type of stress and you can "twist the frame rails" on some of the light weight trailers. You also, if you have a "single landing gear drive motor" run the risk of getting the landing gear "out of sync" and can have problems trying to "establish a starting point" when setting up the trailer. In other words, counting "3 holes up" on the landing gear extension legs may not put the trailer landing gear pads "on equal footing"....