<div dir="ltr"><div class="gmail_default" style="font-size:small">Yes, Paul is right. I did not enlarge the photo until now and misread the wiring.</div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Sun, Dec 28, 2025 at 6:35 AM Paul Hunt <<a href="mailto:paulbhunt73@gmail.com">paulbhunt73@gmail.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"><u></u>
<div>
<p>On a 25D4 the coil wire from the harness is white with a black
stripe and is external to the distributor and connects to a spade
terminal on the outside of the distributor. Internally there is a
brown cloth-covered tinsel strand wire from the spade that sits
under an insulator and nut on the points. It needs to be
electrically isolated from both nut and stud. <br>
</p>
<p>Whilst on the 45D4 it is black, is the coil wire and does pass
through the distributor body, it is factory-attached to the and is
the live side not the earth. It has a tab that slides under a
folded over section of the points spring, there is no nut, just an
insulator that sits between the spring and a support. A short
length of wire is external ending in male spade connector
connecting to the white/black harness wire.</p>
<p>Originally the 25D4 had an earth wire spot-welded and riveted to
the points plate, 45D4 used a through-hole terminal under the
condenser screw so that screw needs to be long enough to hold both
securely. But make sure neither points nor condenser screw are
too long or they can foul the weights and cause running problems.
Like the 25D4 internal coil connection the earth wire was
originally a very flexible brown cloth insulated tinsel-stranded
wire going to one of the screws securing the fixed part of the
points plate to the distributor body. Not generally available, if
they (both coil and earth wires) fail standard wire probably won't
last very long as the points plate is continually twisting back
and fore as the throttle is opened and closed - if you have vacuum
advance.
<br>
<br>
Unless you are replacing the screw that came out make sure it will
fit before putting the condenser in position.
</p>
<div>On 28/12/2025 12:50, Douglas Shook
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr"><br>
<div class="gmail_default" style="font-size:small">Question #2</div>
<div class="gmail_default" style="font-size:small">No, the black
wire is the feed to the coil and needs to be under the nut on
the points spring. It should contact the spring but not the
stud. Ensure that you have a good insulator on that post/stud
to separate the spring from the stud.</div>
</div>
<br>
</blockquote>
</div>
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