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Yes, Paul is right. I did not enlarge the photo until now and misread the
wiring.
On Sun, Dec 28, 2025 at 6:35=E2=80=AFAM Paul Hunt <paulbhunt73@gmail.com> w=
rote:
> 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.
>
> Whilst on the 45D4 it is black, is the coil wire and does pass through th=
e
> 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.
>
> 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 su=
re
> neither points nor condenser screw are too long or they can foul the
> weights and cause running problems. Like the 25D4 internal coil connecti=
on
> the earth wire was originally a very flexible brown cloth insulated
> tinsel-stranded wire going to one of the screws securing the fixed part o=
f
> the points plate to the distributor body. Not generally available, if th=
ey
> (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.
>
> Unless you are replacing the screw that came out make sure it will fit
> before putting the condenser in position.
> On 28/12/2025 12:50, Douglas Shook wrote:
>
>
> Question #2
> 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. Ensu=
re
> that you have a good insulator on that post/stud to separate the spring
> from the stud.
>
> _______________________________________________
>
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m
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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-size:small">Yes=
, Paul is right. I did not enlarge the photo until now and misread the wiri=
ng.</div></div><br><div class=3D"gmail_quote gmail_quote_container"><div di=
r=3D"ltr" class=3D"gmail_attr">On Sun, Dec 28, 2025 at 6:35=E2=80=AFAM Paul=
Hunt <<a href=3D"mailto:paulbhunt73@gmail.com";>paulbhunt73@gmail.com</a=
>> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px=
0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u>=
</u>
=20
=20
=20
<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.=C2=A0 Internally there is=
a
brown cloth-covered tinsel strand wire from the spade that sits
under an insulator and nut on the points.=C2=A0 It needs to be
electrically isolated from both nut and stud.=C2=A0 <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.=C2=A0 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.=C2=A0 A short
length of wire is external ending in=C2=A0 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.=C2=A0 But make sure neither points nor condenser screw are
too long or they can foul the weights and cause running problems.=C2=
=A0
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.=C2=A0 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=3D"cite">
=20
<div dir=3D"ltr"><br>
<div class=3D"gmail_default" style=3D"font-size:small">Question #2<=
/div>
<div class=3D"gmail_default" style=3D"font-size:small">No, the blac=
k
wire is the feed to the coil and needs to be under the nut on
the points spring. It should=C2=A0contact the spring but not the
stud. Ensure that you have a good insulator on that post/stud
to separate=C2=A0the spring from the stud.</div>
</div>
<br>
</blockquote>
</div>
_______________________________________________<br>
<br>
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</blockquote></div>
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