SECTION - 7 STARTING AND ELECTRICAL
90-899883183 DECEMBER 2007 Page 3 / 22
Average cable length Cable gauge
2.9‑3.7 m (9‑1/2 ‑ 12 ft) 70 mm 2 (00)
3.7‑4.6 m (12 ‑ 15 ft) 95 mm 2 (000)
4.6‑5.8 m (15 ‑ 19 ft) 120 mm 2 (0000)
Power Harness
IMPORTANT: On all models equipped with DTS or Emissions Control you must install the
appropriate power harness for your application.
1. Connect the power harness to the battery. Ensure the lead with the fuse is installed onto the
positive battery terminal.
2. Install the lead without the fuse onto the negative battery terminal.
3. Secure the battery cables and the power harness leads to the battery with hex nuts. Tighten
the hex nuts to the specified torque.
Description Nm lb‑in. lb‑ft
Hex nut 13.5 120 –
4. Secure the power harness to the battery cable with a cable tie.
3711
Electrical System Precautions
The following precautions apply to all engines:
IMPORTANT: Refer to the following precautions when working on or around the electrical harness,
or when adding other electrical accessories, to avoid damage to the electrical system.
• Do not tap accessories into the engine harness.
• Do not puncture wires for testing (probing).
• Do not reverse the battery leads.
• Do not splice wires into the harness.
• Do not attempt diagnostics without the proper, approved service tools.
Battery isolators: Isolators can be used to charge an auxiliary battery used for powering
accessories in the boat. They should not be used to charge the battery of another engine in the
boat unless the type of isolator is specifically designed for this purpose.
NOTE: Sure Power Industries Inc., Model 32023A meets this design specification.
• The boat may have 2 engines connected to a single Model 32023A battery isolator.
• The Model 32023A battery isolator is connected to the 2 banks of batteries.
• Each bank contains 2 batteries with the cranking battery for 1 engine in each bank.
• The second battery in each bank is connected in parallel to the cranking battery
• The Model 32023A battery isolator is designed for this type of use; 2 battery banks, 2 charging
sources, 120 amps (maximum alternator output)
• When the engines are operating, either engine’s alternator could be charging either bank of
batteries through the Model 32023A battery isolator.
Any other manufacturer’s battery isolator that is the same type as the Sure Power Inc., Model
32023A could also be used.
Generators: The generator’s battery should be considered another engine’s battery.
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