If the circuit breaker has not tripped, the bulb may have burned out.
Although some lights are LED, which rarely burn out, it is possible.
Take the boat to an authorized MasterCraft dealer to have the bulb
replaced.
UNDERWATER LIGHTS
Models
All models, as an option.
Purpose
Underwater lights provide a significant improvement in visual
illumination of the water beneath swim platforms and in the area
surrounding the boat stern. In shallow water, this can be especially
useful in determining safer operations.
Location
Blue lights, located on the transom below the waterline.
Operation
The combination switch is mounted in an aft position (transom or
storage area) or controlled from the driver’s armrest. The switch is
marked. Press up on the switch to turn ON (a green LED light will be
lighted when the lights are operating). Press down to turn OFF.
Location
Located on the transom below the waterline.
Operation
The switch is a three-position switch located on the dash panel that
activates the courtesy lights or storage compartment(s) within the
boat. Turning the switch to the left will turn the courtesy lights ON,
and turning it to the right will turn the lights ON in the storage
Troubleshooting
If lights do not operate, check the main circuit breaker panel to
determine if a circuit may have tripped. Reset the circuit; if it
continues to trip, take the boat to an authorized MasterCraft dealer.