Regal 53 SC Owner's Manual page 378

BATTERY PARALLEL SWITCH
energizes the appropriate second battery for additional
engine cranking capability.
Normally, if you hear a solenoid click it is operating
properly. Check all solenoid and battery connections for
tightness.
If the battery parallel switch
fails to operate, check the
breaker located above the push
button switch. Always fi nd the
cause of the problem before
resetting the circuit breaker.
A second area to investigate
is the battery solenoid located
in the engine room. When the
switch is pressed the solenoid
32
Chapter 8