Electrical System - Volvo Penta TAMD63L Instruction Book

Electrical system

These engines have an electrical system with a generous generator capacity for a normal-sized boat. When a
more powerful power supply is required, we recommend that you fit an extra generator or install a separate genera-
tor unit.
These engines have a two-pole electrical system with an AC generator. The system voltage is 12V or 24V. The
TAMD71 has an electrical starter element (air preheating) fitted as standard. In these engines, the starter element
facilitates starting a cold engine and reduces exhaust smoke when starting in cold weather. In the TAMD63,
TAMD73 and TAMD74, which all have higher compression, different combustion chambers and a modified injec-
tion system, a starter element is not required.
Positions of electrical components in
engine and reverse gear:
TAMD63
TAMD63
Note. The components in the figures
are numbered the same as in the
engine's wiring diagram on page 75.
3. Starter motor
4. Generator
5. Starter relay
6. Semi-automatic fuses
7. Oil pressure sender, reverse gear
8. Pressure sender, Turbo boost pressure
9. Solenoid valve (fuel cut off valve)
10. Coolant temperature switch
11. Engine coolant temperature sender
12. Oil pressure switch, engine
13. Oil pressure sender, engine
14. Engine speed (rpm) sender
Technical description
The electrical system also includes senders for
monitoring the engine's coolant temperature and oil
pressure.
The electrical system is shown in two ways. The
wiring diagrams (pages 73– 93) shows the wiring,
cable areas and cable colors. The positions of the
respective parts in the engine/reverse gear are shown
in the figures on pages 65– 67.
65