Regal 3300 Owner's Manual page 250

CHAPTER 8
DC ELECTRICAL DIAGNOSTIC CHART
PROBLEM
No 12 volt power
Battery not charg-
ing (Engine run-
ning)
Battery will not
hold charge
12 volt equipment
not working
8-4
POSSIBLE CAUSE
Battery switch in "off "
position
Master breaker tripped
Weak or dead battery
Loose belt
Faulty alternator
Faulty volt meter
Faulty/Old battery
Equipment switch "off " Switch to "on" position
Equipment circuit
breaker blown
Weak or dead battery
Corroded connection
Loose wire
Internal equipment
short
https://www.boat-manuals.com/
POSSIBLE FIX
Turn selector switch to
"on" position
Reset master breaker
Charge or replace bat-
tery
Tighten belt
Repair/Replace
alternator
Replace volt meter
Replace battery
Push reset on circuit
breaker
Replace battery
Eliminate corrosion
Tighten connection
Replace equipment