Mercury - Gen II Panel Mount Remote Control, Lock Bar, With Trim Outboard Control 883710A02. Overview. This Gen II panel mount control is a familiar piece for anyone who's rigged or run trim-equipped Mercury outboards. It's a straightforward mechanical control with a chrome handle that feels solid, not light or sloppy. The lock bar adds a little extra confidence when you're shifting around docks or tight ramps. It's built for boats that get used regularly and need controls that behave the same e