Electrical System Overload Protection - Mercury V-6 series User Manual

CA698

Electrical System Overload Protection

If an electrical overload occurs, a fuse will blow or the circuit breaker
will trip open. The cause must be found and corrected before
replacing fuse or resetting circuit breaker.
1
On the following models, a circuit breaker provides protection for
engine wiring harness and instrumentation power lead. Reset by
pushing RESET button IN.
A 4.3LH and 5.7L Models
B 4.3L EFI, 5.0L EFI, 5.7L EFI and 350 Mag MPI Models
2
On 3.0L, 4.3L and 5.0L Models: A 55 Amp fuse is located on the
large post of the starter solenoid. This fuse is designed to protect the
engine wiring harness if an electrical overload occurs.
3
On EFI Models: A 90 Amp fuse is located on the large post of the
starter solenoid. This fuse is designed to protect the engine wiring
harness if an electrical overload occurs.
NOTE: In an emergency, when engine must be operated and cause
for high current draw cannot be located and corrected, turn OFF or
disconnect all accessories connected to engine and instrumentation
wiring. Reset circuit breaker or replace fuse as appropriate for your
model. If circuit remains open, electrical overload has not been elimi-
nated. Further checks must be made on electrical system.
4
On EFI Models: Three fuses are located on the port side of the
engine. These fuses control various EFI circuits.
A Fuel Pump Fuse - 15 Amp
B ECM / Injector Fuse - 10 Amp
C ECM / Battery Fuse - 15 Amp
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