<div dir="ltr">Thanks for the replies. It may be a week or more before I gather the energy to search for the fault again. I've already wasted two afternoons and have other more important things to do (getting ready to go racing in VRG's Turkey Bowl at Summit Point, WV). The idea of using a tone generating tool is interesting. Horrible Fright has a $25 version - I may give that a try. <div><br></div><div>EjR </div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Nov 11, 2021 at 8:12 AM John <<a href="mailto:jbach@swiftrecruiters.com">jbach@swiftrecruiters.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<p>How about a GFCI outlet that has tripped?</p>
<p><br>
</p>
<div>On 11/10/2021 7:15 PM, Eric Russell
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Oh wise & beneficent Shop Talkers - I've run
into a situation that has me stymied. I need help locating a
blown fuse in a motorhome.
<div><br>
</div>
<div>We recently bought a new (to us) motorhome. When installing
the signal booster for a TPMS (Tire Pressure Monitoring
System) I accidentally shorted a 12V wire in the cargo bay
lights. There was a small spark (followed by a few swear
words). I then went on a hunt for the blown fuse. There are
three fuse panels in this motorhome. Two in the Ford chassis
(F-53) - one under the hood and the other inside near the
parking brake - plus one in the motorhome's 120V - 12V power
converter. I could not find a blown fuse anywhere.
<div><br>
</div>
<div>I contacted the manufacturer (Thor) who has actually been
quite responsive & has tried to help. After asking for
my vehicle's VIN they emailed me some schematics (not actual
wire diagrams but more a map showing the general location of
outlets, switches, etc with indications of which circuit
they belong to). There are two schematics that appear to
apply to my motorhome - one indicates the cargo lights are
connected to the Ford panel by the parking brake, another
indicates they are in circuit #6 of the converter's 12V
panel. Neither of those fuses are blown. While there I
checked all the fuses I could locate - none were blown. I've
also signed up to a couple of motorhome forums but have not
been able to find an answer there. </div>
<div><br>
</div>
<div>Finally - my plea for help - is there any device one can
use to trace where a circuit originates? I've seen an
electrician use a device to find out what outlet goes to
which breaker in our house.</div>
<div><br>
</div>
<div>I've followed the hot wire from the cargo bay light back
to where it enters a wire harness along the motorhome's
frame rail. I'm loath to rip open the wire harness trying to
chase the wire further upstream. As far as I can tell there
is nothing else in this circuit - everything else is working
properly. Of course I can live without cargo bay lights but
it bothers my OCD to have it not working (when I know it did
before my screw up). <br clear="all">
<div><br>
</div>
-- <br>
<div dir="ltr">
<div dir="ltr">Eric Russell
<div>Mebane, NC</div>
</div>
</div>
</div>
</div>
</div>
<br>
<fieldset></fieldset>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr">Eric Russell<div>Mebane, NC</div></div></div>