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<p>O/T (slightly). I now understand how the 'ignition' light works;
i.e. a balance between the battery output and the generator's.
I've also read the using an LED is somewhere between ineffective
and dangerous, but I used an LED for the ignition light and it
functioned just like a bulb for years. I did, however, heed the
warnings and put a bulb back in that circuit.</p>
<p>Bob<br>
</p>
<div class="moz-cite-prefix">On 5/25/2019 9:23 AM, Roger Grace
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:413736495.314116452.1558801423696.JavaMail.zimbra@mailid.telus.net">
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<div>Suggest that you consider powering the fan via a relay
(reduces current through ign switch) and also an in line fuse
for good practice when adding new circuits.<br>
</div>
<div>Also as Perry says the ign warning light coming on is not a
complete disaster. It just tells you you are at full capcity
and you could probably drive for a few hours if your batt is
OK. Sounds like you have an ammeter - just keep an eye on it
when using the fan and note the discharge the current -
probably less than 5A - and note too the increased make up
charging current after you switch off the fan.</div>
<div>rg</div>
</div>
<div><br>
</div>
<div>----- Original Message -----<br>
From: Patrick & Caroline Quinn <a class="moz-txt-link-rfc2396E" href="mailto:p_cquinn@tpg.com.au"><p_cquinn@tpg.com.au></a><br>
To: 'Michael Salter' <a class="moz-txt-link-rfc2396E" href="mailto:michaelsalter@gmail.com"><michaelsalter@gmail.com></a><br>
Cc: <a class="moz-txt-link-abbreviated" href="mailto:healeys@autox.team.net">healeys@autox.team.net</a><br>
Sent: Sat, 25 May 2019 05:24:07 -0600 (MDT)<br>
Subject: Re: [Healeys] Ignition Circuit<br>
</div>
<div><br>
</div>
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<p class="MsoNormal"><span style="font-size: 11.0pt;"
data-mce-style="font-size: 11.0pt;">Hello Michael</span></p>
<p class="MsoNormal"><span style="font-size: 11.0pt;"
data-mce-style="font-size: 11.0pt;"> </span></p>
<p class="MsoNormal"><span style="font-size: 11.0pt;"
data-mce-style="font-size: 11.0pt;">And to obtain a wiring
harness for a real Healey would mean that it has to be
specially made.</span></p>
<p class="MsoNormal"><span style="font-size: 11.0pt;"
data-mce-style="font-size: 11.0pt;"> </span></p>
<p class="MsoNormal"><span style="font-size: 11.0pt;"
data-mce-style="font-size: 11.0pt;">Thanks</span></p>
<p class="MsoNormal"><span style="font-size: 11.0pt;"
data-mce-style="font-size: 11.0pt;"> </span></p>
<p class="MsoNormal"><span style="font-size: 11.0pt;"
data-mce-style="font-size: 11.0pt;">Patrick Quinn</span></p>
<p class="MsoNormal"><span style="font-size: 11.0pt;"
data-mce-style="font-size: 11.0pt;"> </span></p>
<p class="MsoNormal"><b><span style="font-size: 10.0pt;
font-family: 'Tahoma','sans-serif';"
data-mce-style="font-size: 10.0pt; font-family:
'Tahoma','sans-serif';" lang="EN-US">From:</span></b><span
style="font-size: 10.0pt; font-family:
'Tahoma','sans-serif';" data-mce-style="font-size: 10.0pt;
font-family: 'Tahoma','sans-serif';" lang="EN-US"> Michael
Salter [<a class="moz-txt-link-freetext" href="mailto:michaelsalter@gmail.com">mailto:michaelsalter@gmail.com</a>] <br>
<b>Sent:</b> Saturday, 25 May 2019 9:09 PM<br>
<b>To:</b> Patrick and Caroline Quinn<br>
<b>Cc:</b> <a class="moz-txt-link-abbreviated" href="mailto:healeys@autox.team.net">healeys@autox.team.net</a><br>
<b>Subject:</b> Re: [Healeys] Ignition Circuit</span></p>
<p class="MsoNormal"> </p>
<div>
<p class="MsoNormal">Hi Patrick, I would agree that using the
fused connection on the "ignition switched" side of the fuse
block as the source would be a good idea. The ignition
switch is not fuse protected so by using that as a source
you do run a risk of "letting the smoke out" should a short
to ground occur in your fan system. </p>
<div>
<p class="MsoNormal">You may find that the electrical
demands of your fan are more than the fuses can handle as
the system was not designed with heavy continuous loads in
mind. </p>
</div>
<div>
<p class="MsoNormal">To circumvent that issue you could use
the unfused side of the "<span style="font-family:
'Arial','sans-serif';" data-mce-style="font-family:
'Arial','sans-serif';">ignition switched" section of the
fuse block as the source and install an "in line" fuse
to protect the fan circuit. </span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:
'Arial','sans-serif';" data-mce-style="font-family:
'Arial','sans-serif';">I cannot overemphasize the
importance of protecting the fan circuit with a fuse, it
very easy to damage a wiring harness and replacing one
is a major undertaking. </span></p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:
'Arial','sans-serif';" data-mce-style="font-family:
'Arial','sans-serif';">M</span></p>
</div>
</div>
<p class="MsoNormal"> </p>
<div>
<div>
<p class="MsoNormal">On Sat, May 25, 2019, 3:17 AM Patrick
& Caroline Quinn, <<a
href="mailto:p_cquinn@tpg.com.au" target="_blank"
data-mce-href="mailto:p_cquinn@tpg.com.au"
moz-do-not-send="true">p_cquinn@tpg.com.au</a>>
wrote:</p>
</div>
<blockquote style="border: none; border-left: solid #CCCCCC
1.0pt; padding: 0cm 0cm 0cm 6.0pt; margin-left: 4.8pt;
margin-right: 0cm;" data-mce-style="border: none;
border-left: solid #CCCCCC 1.0pt; padding: 0cm 0cm 0cm
6.0pt; margin-left: 4.8pt; margin-right: 0cm;">
<div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"
data-mce-style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;">Hello</p>
<p class="MsoNormal" style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"
data-mce-style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"> </p>
<p class="MsoNormal" style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"
data-mce-style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;">Seeking advice from
those who understand automotive electrics.</p>
<p class="MsoNormal" style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"
data-mce-style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"> </p>
<p class="MsoNormal" style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"
data-mce-style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;">My real Healey has an
electric fan in front of the radiator that was
controlled by a thermo switch. Worked reasonably well,
but drew quite a bit of power but nothing concerning.
When on, the amp gauge needle would always hover in
the negative.</p>
<p class="MsoNormal" style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"
data-mce-style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"> </p>
<p class="MsoNormal" style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"
data-mce-style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;">Personally I don’t like
thermo switches, so the fan has now been wired direct
and operated by a discreet switch under the dash.
Power is taken directly from the outgoing side of the
ignition switch so that the fan only comes on when the
ignition is on along with the specific switch.</p>
<p class="MsoNormal" style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"
data-mce-style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"> </p>
<p class="MsoNormal" style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"
data-mce-style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;">Works well, but now when
the fan goes on the ignition light is illuminated and
will not go out.</p>
<p class="MsoNormal" style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"
data-mce-style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"> </p>
<p class="MsoNormal" style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"
data-mce-style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;">Does that mean that the
ignition circuit doesn’t like what I have done? I am
thinking of taking the power direct from the incoming
side of the ignition switch so that the fan is powered
direct from the battery. Would that work?</p>
<p class="MsoNormal" style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"
data-mce-style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"> </p>
<p class="MsoNormal" style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"
data-mce-style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;">Any electrical whizzes
out there?</p>
<p class="MsoNormal" style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"
data-mce-style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"> </p>
<p class="MsoNormal" style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"
data-mce-style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;">Thanks</p>
<p class="MsoNormal" style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"
data-mce-style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"> </p>
<p class="MsoNormal" style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"
data-mce-style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;">Patrick Quinn</p>
<p class="MsoNormal" style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;"
data-mce-style="mso-margin-top-alt: auto;
mso-margin-bottom-alt: auto;">Blue Mountains,
Australia</p>
</div>
<br>
</div>
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