Section 2 - Getting to Know Your Power Package
Page 20 90-8M0069751 eng APRIL 2012
After finding and correcting the cause of the overload, replace any burned out (blown) fuses.
2.0 fuse panel
Reference Fuse Protection
Location on fuse panel (From
Front of Engine)
a 20‑amp Un‑switched power to helm Lower left
b 10‑amp Switched power to ECM Middle left
c 10‑amp Keyed power to ECM Upper left
d 5‑amp Power—diagnostic connector Upper right
e 15‑amp ECM switched power to SIM Middle right
f 15‑amp Switched power to ECM Lower right
Vessel Integration Panel (VIP) Overload Protection
A vessel integration panel (VIP) is typically mounted in the engine compartment. The VIP used with QSD engines contains
three circuit breakers that help protect system wiring.
a - Helm circuit breaker (10 A)
b - Gear circuit breaker (15 A)
c - SIM/Vessel circuit breaker (10 A)
Power Trim and MerCathode Overload Protection
If an electrical overload on the electrical system occurs, a fuse will burn out (blow). Find and correct the cause before replacing
the fuse.
NOTE: If you must operate the engine in an emergency, turn off and disconnect all accessories from the engine and
instrumentation wiring if you cannot find and correct the cause for the electrical overload or excessive current draw. Replace
the fuse. If the fuse burns out, the electrical overload has not been eliminated. Further checks must be made on the electrical
system. Contact your Mercury Diesel authorized repair facility.
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