Beta Marine Beta 50 Operator's Maintenance Manual page 52

ELECTRICAL TROUBLE SHOOTING - EXTENSION HARNESSES
Some installations require one of the 'panel extension
11-way connectors' to be removed to allow the cable to
be passed through bulkheads etc.
If any panel problems are experienced, after this has
been done, visually check all 11-way connections on
engine harness to panel extension* to ensure wire colours
to each terminal match up to the correct colour in its
corresponding terminal.
* Also applies for panel to panel extension cables for installations with additional flybridge control panel option.
ELECTRICAL TROUBLE SHOOTING - INSULATED EARTH
If your application is wired as insulated earth return and
the engine will not operate correctly, always check starter
battery negative is connected to the correct terminal on
the isolating solenoid.
Extra attention must be given to black (ground) and
black/blue (tacho), also brown (switched positive to
alternator) and brown/yellow (charge fail) as these
connections are harder to distinguish between in poorly lit
areas. Whilst doing this check integrity of each connection
to ensure terminals have not become damaged. Once
checked, re-fit cable tie around each connection to keep
them secure.
It should be connected to the terminal which is also used
for all the small black wires. NB: Not the terminal with
the single black wire connected directly to engine ground.
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