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Saw this problem was solved, but wanted to add my feedback on a cable
tracker that others have mentioned. I have a 5+ year old version from
Harbor Freight, but it is no longer on their site. This appears to be
the current version:
https://www.harborfreight.com/cable-tracker-94181.html
I was doing some renovations and had wires in electrical outlook boxes
that I couldn't identify. With the power off, I connected the signal
generator and was able to trace the signal with the wand through the
plaster walls. Both went to locations in the wall with no exposed box -
bad work by someone decades ago. The plaster walls were a challenge and
I only got a weak signal, but was able to know it was ok to cap the wires.
I also have about 10 phone jacks in my house, with some shorts in some
of them. The phone company installer initially just disconnected
everything and reconnected only the two I was going to connect. A few
years later, I needed to move my DSL modem, so needed to activate a
different jack. Connected the signal generator and ran the wand over
the disconnected wires at the central phone termination to find the one
I needed to connect.
Brian
On 11/10/2021 4:15 PM, Eric Russell wrote:
> 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.
>
> 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.
>
> 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.
>
> 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.
>
> 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).
>
> --
> Eric Russell
> Mebane, NC
>
> _______________________________________________
>
> Shop-talk@autox.team.net
> Donate:http://www.team.net/donate.html
> Suggested annual donation $12.96
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>
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Saw this problem was solved, but wanted to add my feedback on a
cable tracker that others have mentioned. I have a 5+ year old
version from Harbor Freight, but it is no longer on their site.  Â
This appears to be the current version:<br>
<br>
<a class="moz-txt-link-freetext"
href="https://www.harborfreight.com/cable-tracker-94181.html";>https://www.harborfreight.com/cable-tracker-94181.html</a><br>
<br>
I was doing some renovations and had wires in electrical outlook
boxes that I couldn't identify. With the power off, I connected the
signal generator and was able to trace the signal with the wand
through the plaster walls. Both went to locations in the wall with
no exposed box - bad work by someone decades ago. The plaster walls
were a challenge and I only got a weak signal, but was able to know
it was ok to cap the wires.<br>
<br>
I also have about 10 phone jacks in my house, with some shorts in
some of them. The phone company installer initially just
disconnected everything and reconnected only the two I was going to
connect. A few years later, I needed to move my DSL modem, so
needed to activate a different jack. Connected the signal generator
and ran the wand over the disconnected wires at the central phone
termination to find the one I needed to connect.<br>
<br>
Brian<br>
<br>
<div class="moz-cite-prefix">On 11/10/2021 4:15 PM, Eric Russell
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAP7dBXAUkTD2CXpZES70onWfajOE3XgaUxhfUH2xjqkWwoPfYA@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<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.Â
<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.Â
<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" class="gmail_signature"
data-smartmail="gmail_signature">
<div dir="ltr">Eric Russell
<div>Mebane, NC</div>
</div>
</div>
</div>
</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<pre class="moz-quote-pre"
wrap="">_______________________________________________
<a class="moz-txt-link-abbreviated"
href="mailto:Shop-talk@autox.team.net";>Shop-talk@autox.team.net</a>
Archive: <a class="moz-txt-link-freetext"
href="http://www.team.net/pipermail/shop-talk";>http://www.team.net/pipermail/shop-talk</a>
<a class="moz-txt-link-freetext"
href="http://autox.team.net/archive";>http://autox.team.net/archive</a>
</pre>
</blockquote>
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