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Dave,
In your attached picture, the relay is mounted upside down. Normally
the single hole mounting tab goes at bottom, while the three hole
mounting tab goes at top, and #1 terminal will be at top right.
The cover appears to be right way around, like it was never
removed. If you flip the unit over with single hole mount at bottom,
then the cover will also be right side up with terminals 1 and 5 at top.
Reason for your electrical confusion is as shown in the picture the
wires are on the wrong termainal numbers. See correct wiring diagram here:
http://www.mgaguru.com/mgtech/electric/pics/circ_f2.gif
And there are NINE electrical connections. The shell of the relay
has to be grounded on the body of the car for the relays to
click. You may need to scrape a little paint off of the rear side of
the firewall to make ground connection through one of the screws.
Barney Gaylord
1958 MGA with an attitude
http://MGAguru.com
At 04:33 PM 2/21/2023, dave northrup wrote:
><http://www.mgaguru.com/mgtech/electric/et105.htm>http://www.mgaguru.com/mgtech/electric/et105.htm
>
>I am just really confused. when I test this, and I have a used one
>that a vendor says tested good, I find that terminals 5 and 1 (see
>Barney's webpage) connect to ground when I use a continuity
>tester. On the workbench terminals 1 and 5 show connection to the
>casing, which I am pretty sure is supposed to be grounded.
>
>Can someone explain to me why this is right? I really want to make
>sure I don't have an errant ground.
>....
>Attachment: 20230213_185654a.jpg
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<font size=3D3>Dave,<br><br>
In your attached picture, the relay is mounted upside down.
Normally the single hole mounting tab goes at bottom, while the three
hole mounting tab goes at top, and #1 terminal will be at top
right.<br><br>
The cover appears to be right way around, like it was never
removed. If you flip the unit over with single hole mount at
bottom, then the cover will also be right side up with terminals 1 and 5
at top.<br><br>
Reason for your electrical confusion is as shown in the picture the wires
are on the wrong termainal numbers. See correct wiring diagram
here:<br>
<a href=3D"http://www.mgaguru.com/mgtech/electric/pics/circ_f2.gif"; eudora=
=3D"autourl">
http://www.mgaguru.com/mgtech/electric/pics/circ_f2.gif<br><br>
</a>And there are NINE electrical connections. The shell of the
relay has to be grounded on the body of the car for the relays to
click. You may need to scrape a little paint off of the rear side
of the firewall to make ground connection through one of the
screws.<br><br>
Barney Gaylord<br>
1958 MGA with an attitude<br>
<a href=3D"http://mgaguru.com/"; eudora=3D"autourl">http://MGAguru.com<br><b=
r>
<br>
</a>At 04:33 PM 2/21/2023, dave northrup wrote:<br><br>
<blockquote type=3Dcite class=3Dcite cite=3D"">
<a href=3D"http://www.mgaguru.com/mgtech/electric/et105.htm";>
http://www.mgaguru.com/mgtech/electric/et105.htm</a><br>
<br>
I am just really confused. when I test this, and I have a used one
that a vendor says tested good, I find that terminals 5 and 1 (see
Barney=92s webpage) connect to ground when I use a continuity tester. =
On the workbench terminals 1 and 5 show connection to the casing, which I
am pretty sure is supposed to be grounded.<br>
<br>
Can someone explain to me why this is right? I really want to make
sure I don=92t have an errant ground. <br>
=2E...<br>
Attachment: 20230213_185654a.jpg</font></blockquote><div id=3D"DAB4FAD8-2DD=
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