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Yes.=C2=A0 He was correct on everything up until he called out the strippe=
d end as the anode.
Many (but no all) DVM's have a diode check function.=C2=A0 You can verify t=
he direction with that.=C2=A0 Your red lead will be positive.=C2=A0=20
=20
Dave=20
=20
=20
-----Original Message-----
From: Jim Wallace <grandfatherjim@gmail.com>
To: triumphs@autox.team.net
Sent: Thu, Jun 16, 2022 3:24 pm
Subject: [TR] Electric Fan relay
=C2=A0Ron,I believe the diode should be installed the other way. The way yo=
u have described it, it will conduct positive straight to ground.Jim
------------------------------
From: ronald.olds@mchsi.com
To: keithstewart@bell.net
Cc: triumphs@autox.team.net
Subject: Re: [TR] Electric Fan Relay
Message-ID:
=C2=A0 =C2=A0 =C2=A0 =C2=A0 <806236043.1685117.1655398950108.JavaMail.zimbr=
a@mchsi.com>
Keith,=20
I would recommend connecting a 1N4004 diode across the positive an the grou=
nd terminals of the relay coil. Connect the cathode end of the diode to the=
positive terminal and the anode end (the end of the diode with the line om=
it) to the negative terminal. this will have no effect when the relay is e=
nergized. When a relay is denergized it generates a spark which can burn th=
e points. The diode will allow this spark to travel through the diode and d=
issipate.=20
Connect to relay negative connection. Connect to the relay positive termina=
l.=20
Diodes should be across the terminals of all relays and solenoids.=20
Ronald Olds=20
From: keithstewart@bell.net=20
To: triumphs@autox.team.net=20
Sent: Thursday, June 16, 2022 11:38:04 AM=20
Subject: [TR] Electric Fan Relay=20
I have a 62 TR4 with Trim Line electric fan, Derale fan controller, 30 amp =
fuse, and 30 amp NAPA relay. In the past 5 or 6 years, I have likely replac=
ed the relay six or seven times. The wiring seems pretty straight forward a=
nd all seems in order. I really have no idea where to look next. Any sugges=
tions?
Keith Stewart=20
keithstewart@bell.net
** triumphs@autox.team.net **
Archive: http://www.team.net/pipermail/triumphs http://www.team.net/archiv=
e
sey@cs.com
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<div style="color:black;font: 12pt Arial, Helvetica, sans-serif;">
<div> <font size="3">Yes. He was correct on everything up until he called
out the stripped end as the anode.</font></div>
<div><br>
</div>
<div><font size="3">Many (but no all) DVM's have a diode check function.
You can verify the direction with that. Your red lead will be
positive. </font><br>
</div>
<div> <br>
</div>
<div style="clear:both">
<div style="color:black;font:12pt Arial, Helvetica, sans-serif;">
<div><font size="4">Dave <br>
</font></div>
<div><font size="3"><span style="font-size: 10pt; color: black;"><br>
</span></font></div>
<br>
</div>
</div>
<div> <br>
</div>
<div> <br>
</div>
<div style="font-family:arial,helvetica;font-size:10pt;color:black"><font
size="2">-----Original Message-----<br>
From: Jim Wallace <grandfatherjim@gmail.com><br>
To: triumphs@autox.team.net<br>
Sent: Thu, Jun 16, 2022 3:24 pm<br>
Subject: [TR] Electric Fan relay<br>
<br>
<div id="yiv4513925703">
<div>
<div class="yiv4513925703gmail_quote">
<div dir="ltr" class="yiv4513925703gmail_attr"> Ron,</div>
<div dir="ltr" class="yiv4513925703gmail_attr">I believe the diode should be
installed the other way. The way you have described it, it will conduct
positive straight to ground.</div>
<div dir="ltr" class="yiv4513925703gmail_attr">Jim</div>
<blockquote style="margin:0 0 0 .8ex;border-left:1px #ccc
solid;padding-left:1ex;" class="yiv4513925703gmail_quote">
<br>
------------------------------<br>
<br>
<br>
From: <a rel="nofollow noopener noreferrer"
ymailto="mailto:ronald.olds@mchsi.com"; target="_blank"
href="mailto:ronald.olds@mchsi.com";>ronald.olds@mchsi.com</a><br>
To: <a rel="nofollow noopener noreferrer"
ymailto="mailto:keithstewart@bell.net"; target="_blank"
href="mailto:keithstewart@bell.net";>keithstewart@bell.net</a><br>
Cc: <a rel="nofollow noopener noreferrer"
ymailto="mailto:triumphs@autox.team.net"; target="_blank"
href="mailto:triumphs@autox.team.net";>triumphs@autox.team.net</a><br>
Subject: Re: [TR] Electric Fan Relay<br>
Message-ID:<br>
<<a rel="nofollow noopener noreferrer"
ymailto="mailto:806236043.1685117.1655398950108.JavaMail.zimbra@mchsi.com";
target="_blank"
href="mailto:806236043.1685117.1655398950108.JavaMail.zimbra@mchsi.com";>806236043.1685117.1655398950108.JavaMail.zimbra@mchsi.com</a>><br>
<br>
Keith, <br>
<br>
I would recommend connecting a 1N4004 diode across the positive an the ground
terminals of the relay coil. Connect the cathode end of the diode to the
positive terminal and the anode end (the end of the diode with the line om it)
to the negative terminal. this will have no effect when the relay is energized.
When a relay is denergized it generates a spark which can burn the points. The
diode will allow this spark to travel through the diode and dissipate. <br>
Connect to relay negative connection. Connect to the relay positive terminal.
<br>
<br>
Diodes should be across the terminals of all relays and solenoids. <br>
<br>
Ronald Olds <br>
<br>
<br>
From: <a rel="nofollow noopener noreferrer"
ymailto="mailto:keithstewart@bell.net"; target="_blank"
href="mailto:keithstewart@bell.net";>keithstewart@bell.net</a> <br>
To: <a rel="nofollow noopener noreferrer"
ymailto="mailto:triumphs@autox.team.net"; target="_blank"
href="mailto:triumphs@autox.team.net";>triumphs@autox.team.net</a> <br>
Sent: Thursday, June 16, 2022 11:38:04 AM <br>
Subject: [TR] Electric Fan Relay <br>
<br>
I have a 62 TR4 with Trim Line electric fan, Derale fan controller, 30 amp
fuse, and 30 amp NAPA relay. In the past 5 or 6 years, I have likely replaced
the relay six or seven times. The wiring seems pretty straight forward and all
seems in order. I really have no idea where to look next. Any suggestions?<br>
<br>
Keith Stewart <br>
<br>
<a rel="nofollow noopener noreferrer" ymailto="mailto:keithstewart@bell.net";
target="_blank"
href="mailto:keithstewart@bell.net";>keithstewart@bell.net</a><br>
</blockquote></div>
</div>
</div>
** <a ymailto="mailto:triumphs@autox.team.net";
href="mailto:triumphs@autox.team.net";>triumphs@autox.team.net</a> **<br>
<br>
Archive: <a href="http://www.team.net/pipermail/triumphs";
target="_blank">http://www.team.net/pipermail/triumphs </a> <a
href="http://www.team.net/archive";
target="_blank">http://www.team.net/archive</a><br>
<br>
</font></div>
</div>
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