Triplett Fox & Hound 3 – PN: 3397 - Manual (Page 43)

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cations, the far end of the wire must be disconnected from
any loads or any other wires, or the tracer tone will be shorted
out, or it will migrate into other wires. Because wires adja-
cent to the target wire will often acts as shields, and be-
cause the wires in cars are often bundled together into har-
nesses, it may be difficult to follow the target wire through
the harness. Try to locate the wire as it emerges from the
harness.
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.
8.1.4.8: 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
be used, but the water will act as the ground. Attach one clip
of the FOX to a metal object that is in contact with the water,
and the other clip to the wire to be traced. If necessary, at-
tach an extension wire to the FOX so that the clip will reach
the “grounded” metal object. If there is no grounded metal
object, simply drop the extension wire overboard into the
water.