The 12 volt battery furnished with the Catalina 22 electrical system will provide power for your lights for many hours, but like any lead-acid battery it will need recharging occasionally. Be sure the cabin is open for ventilation while charging, or remove the battery and charge ashore.
The battery is provided with a tie-down to prevent its tipping over at an extremely high angle of heel. Be sure this tie-down is fastened. If you ordered wiring in your boat, but not the mast light for under power, you may need to locate the wires for the mast light plug so you can install one yourself.
On the cabin top, at a point about six inches from the centerline and two inches aft of the front of the mast step, you will find a small dimple in the non-skid. Drill a 3/4″ hole here (being careful not to go thru the cabin overhead line) and you will find the wire ends can be fished out with a bent wire.
The switch panel on boats ordered with electrical systems is fused; each circuit has a 15 Amp fuse under a screw cover.