Service Manual

ECM Unswitched Power Terminal Blocks ISB, ISBe and QSB (Common Rail [...]
Page 13-32 Section 13 - Electrical Equipment - Group 13
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If for some reason the terminal blocks are damaged, new
terminal blocks can be obtained and installed.
Preparatory Steps
WARNING
Batteries can emit explosive gases. To reduce the
possibility of personal injury, always ventilate the
compartment before servicing the batteries. To
reduce the possibility of arcing, remove the negative
(-) battery cable first and attach the negative (-)
battery cable last.
Before removing the unswitched power supply wires from
the engine, be sure the positive and negative wires are
disconnected from the battery. Refer to Procedure
013-009.
If a battery switch is being used on the vessel, be sure to
disconnect all batteries.
Remove the external unswitched power supply battery
connection from the battery.
Remove the unswitched wire connectors from the positive
and negative terminal blocks.
Remove
Remove the engine wiring harness connectors from the
back of the positive or negative terminals. Some plates
may have to be removed to complete this operation.