Location
The location of the main circuit breaker board is under the dash 
panel closeout, facing aft, except on the XStar, which does not have 
this panel, and the ProStar, where it is located on the starboard 
side of the walk-thru to the bow area. In some models, there is an 
additional breaker panel to assist with the accessory load, and 
where equipped, it is located near the battery box. There may also 
be a waterproof fuse for the stereo amplifier, where equipped. If 
the boat’s accessories are malfunctioning, check and then reset 
breakers as necessary. 
 
The XStar features digital switching. Instead of a breaker panel, 
there are four (4) PDM breakers and a main breaker that are   locat-
ed on the battery shut-off switch panel beneath the port aft seating. 
 
The engine also has a fuse box that contains a variety of 10-30 amp 
fuses,  located in the engine compartment on the engine. 
 
If you suspect that any of these fuses may not be operating as 
designed, you should take your boat to your authorized MasterCraft 
service department for inspection and repair. 
 
If during maintenance or inspection it becomes necessary to 
remove or reposition any of the engine’s wiring or wire harness(es), 
verify that the wiring has been returned to its original position and 
that all harnesses are routed correctly before attempting to use the 
boat again. If a wiring clip or retainer breaks, replace it immediately. 
Wiring is specifically routed to eliminate problems related to engine 
heat, and spray or immersion in liquids. Electrical problems may 
result if wiring is moved from its original position.
Operation
On all models except the XStar, if a problem develops with one of 
the circuits, switch OFF the circuit and wait for approximately one (1) 
minute. Then fully push the appropriate breaker button and switch 
ON the circuit. If the circuit continues to trip, there is a problem 
somewhere that must be attended to immediately. See your 
authorized MasterCraft service department to resolve this matter. 
 
On the XStar, turn OFF the controlling switch; i.e., if the courtesy 
lights are not working, turn OFF the Courtesy Light switch. Allow a 
few seconds for the digital switching to reset, and then turn back  
ON. If the electrical function does not reset, see your authorized 
MasterCraft service department to resolve the issue.