TPD 1399E Chapter 7
Page 21
Engine electrical systems
A plug-together electrical system is available with the
engine, providing the following choices:-
• Earth return or insulated return
• Interconnecting cables of 4, 6, 8, 10 or 12m length
• A ‘Y’ harness to allow multiple instrument panels
to be tted.
• Instrument panels - basic or comprehensive, which
may be used individually or in combination.
Note: The nominal operating voltage for the M65 and
M85T is 12v.
Engine wiring loom
The engine wiring loom connects the starter, alternator,
fuse board, electric stop, engine senders and warning
switches to a waterproof (IP67) multiway connector
situated on a ying lead attached to the engine in
position (A1). The circuit diagram is shown on page 22
where it will be seen that the system is earth return.
Insulated return
To convert to an insulated return, a kit incorporating a
power relay can be specied. The relay momentarily
connects the battery negative to the starter body and
engine block during starter operation. The position of
the relay is shown on (B), where (B1) is the cable from
the battery negative, which is attached to terminal
(B2) during engine installation. The circuit diagram
for the engine wiring loom with insulated return is
shown on page 22. (The cold start kit described is
also included).
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