RDG603A20 - Issue 10
Page 32 of 100
Do not attach any part, hose or cable to the engine wiring harness. There is a warning
label attached to the harness to remind you of this.
Connect the wiring extension harness multi plug to the panel plug and the other end
to the engine.
Connect the start battery positive cable to the engine starter motor solenoid terminal.
The starter motor battery cable must have a cross sectional area of at least 50mm
2
.
For twin alternator engines, connect the domestic battery positive cable to the 150A
or 240A Alternator. The 150A alternator has a B+ terminal and the 240A alternator
has a “pos out” terminal (see wiring diagram). This ensures that the 50A alternator
charges the start battery and the 150A or 240A alternator charges the domestic
battery. This removes the requirement for a split charging system or relay.
The engine is supplied with the domestic alternator belt not fitted. This is so that
domestic alternator damage does not occur if the engine is run without the domestic
battery back connected. The belt should only be fitted when the domestic battery bank
has been connected to the domestic alternator. Belt fitting and tensioning instructions
are in
Section 7
– Service Procedure
. Make sure the alignment is correct.
A cable will need to be manufactured locally and fitted between the lower 150A or
240A alternator and domestic battery positive terminal. The cable should have a
minimum cross sectional area of:
Cross Sectional Area
Shire 38 & 40
40mm²
Shire 45 & 50
70mm²
Both negative battery terminals can be connected to a common earth point.
Note: The 240A alternator is of the insulated earth design and requires a heavy duty earth
cable installed at all times.
13. Electrical Options
DANGER:
ELECTRIC SHOCK RISK!
If the engine is fitted with the optional 230V Travel Power System, refer to the manual
supplied with it for correct wiring, control box installation and operation.
The Shire range can be supplied with other optional additional 12V or 24V alternators.
This will be supplied fitted but not wired. It is the responsibility of the boat builder to
ensure that this is correctly wired to the boats electrical system.
