Triplett Hound 3 – PN: 3392 - Manual (Page 33)

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cause wires adjacent to the target wire will often acts as
shields, and because the wires in cars are often bundled to-
gether into harnesses, it may be difficult to follow the target
wire through the harness. Try to locate the wire as it emerges
from the harness.
If using a FOX 2, use the True Trace feature to identify the
target wire. Short the suspect wires to the metal chassis to
activate True Trace, and listen for the cadence change. If more
than one wire causes the cadence to change, the wires are
somehow connected together, either through a short or
through a load (like a light bulb, a switch, a motor, etc.).
If using a FOX, use the Remote Tone Kill technique (previ-
ously described) to find the target wire.
Find an open fault by tracing along the wire until the tracer
tone drops dramatically in level. Shorting the far end of the
open wire to chassis ground may help. If the wire is bundled
in a harness, it may be difficult, if not impossible to locate
the open without unbundling the harness. In these cases, it
is sometimes more expedient to run a new wire to replace
the open wire.
7.2.9: Boats
Wiring tracing on metal hulled boats is similar to tracing
wires in cars (see above).
If tracing wires in a boat with a non-conductive hull (wood
or fiberglass) that is in the water, the grounded method can