This article explains the different lockers in a TrailLite motorhome
Battery Locker:
Contains your Lithium/ AGM battery, Solar Charger and Battery Charger/Inverter, Power Contribution Box containing fuses (spare fuses in the manual bag) and your Macpac unit that enables your alternator to charge your house battery.
Note: In some floorplans, some components will not fit into the battery locker and will be located elsewhere.
Wet Locker:
It contains your greywater hose and your blackwater hose. If you have a black water toilet, it can be hosed out to clean as it has drainage.
Gas Lockers:
Contains two 9kgs gas bottles. To open the gas turn all the way to the left and to shut gas off turn handle to the right, there is also a yellow switch handle that you can use to turn off and on. It is recommended that you turn the gas off while driving and on ferry crossings
Garage Locker:
Contains padded solar blinds for your windscreen windows, filler board and squab for your spare bed, 4 wooden blocks for your stabilizer legs, a tyre changing kit, a freshwater hose, an external shower hose (if you have one), an awning stick (for Thule awning it is attached to the inside of the garage locker door), the stabilizer legs winder, the winder for the manual Thule bike rack. The hooks for the securing runners are attached to the inside of the garage locker sidewall. These can be moved by pushing and turning them to remove and place them somewhere else along that rail.
Note - All of these lockers have the same key, the EMKA key.