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Hey Moose, thanks for the reply. Harness was done by a pro that does it fo=
r a=20
living...He is meticulous. He completely strips everything
from the car then starts from a blank slate... Everything new.. Nice looms =
and=20
grommets at every hole and hides as much of it as he can.
=20
Every component was new and oem or better... no import crap. =20
I'm of the same opinion as you afa a short to ground but it's gotta be hidd=
en=20
inside something
that we=20
can't see.
=20
Someone on my ford forum suggested putting a volt meter in the circuit and =
watch the voltage for a drop...but you're=20
so busy trying to get out of traffic and not
get plowed=20
it's difficult to remember to watch the meter.... and yes this has been g=
oing on for over a year...intermittently and even after all the changes... =
it persists
=20
john
=20
----- Original Message -----
From: <eric@megageek.com>
To: shop-talk <shop-talk@autox.team.net>
Cc: john niolon <jniolon@att.net>
Sent: 05/19/2026 4:40:59 PM
Subject: Re: [Shop-talk] strange automotive electrical problem
John, I would have bet money it was a hidden wire short somewhere. It had a=
ll the Hallmarks. But you stated the wiring harness what completely replac=
ed. So, that rules that out...=20
Or does it?=20
My question, when you said 'headlight=20
to=20
taillight', that is complete. BUT was there ANY wire that was in that car =
that wasn't=20
part of the harness?=20
Something in dash, neutral switch, tranny indicator, or some other componen=
t?=20
I'm still betting on a wire short, but I guess it could be a short inside a=
component. Maybe inside the alt or other part?=20
BTW, I'm=20
assuming it was doing this, before you did all these mods, right?=20
Anyway, that is a stumper.=20
Moose=20
From: "john niolon" <jniolon@att.net>=20
To: "shop-talk" <shop-talk@autox.team.net>=20
Date: 05/19/2026 13:16=20
Subject: [Shop-talk] strange automotive electrical problem=20
Sent by: "Shop-talk" <shop-talk-bounces@autox.team.net>=20
Strange automotive electrical problem we need help with=E2=80=A6
55 chevy automatic with 383 stroker motor, carbed, p/s,p/b,a/c
Dakota digital dash system including neutral safety switch and
Transmission gear indicator
=20
When it is running right, it=E2=80=99s scary strong. Cruises nicely.
=20
Problem=E2=80=A6 when driving the engine dies like you cut it off=E2=80=A6B=
UT will start back up
Immediately and run perfectly till the next time it does it. Might be 15=
=20
minutes=E2=80=A615 days or
three month later. Might do it 4 times in a row or once and not repeat. Sp=
eed=20
does not effect it.=20
Engine temp does not effect it=E2=80=A6 does it hot or cold. With the a/c =
on or off. =20
It does not have a
Cutoff switch in the system. Longest period with no failure is 7 months=E2=
=80=A6=20
shortest was 4 minutes.
=20
When it stalls we checked fuel by looking in the bowl of carb and gas is=20
spraying as it should
So we are assuming electrical of some sort. So far we=E2=80=99ve done the =
following=E2=80=A6
=20
Replaced battery with new red top optima battery and all new battery cables=
(2=20
gauge I think)
Replaced all ground cables frame/block=E2=80=A6 frame/chassis with 2/0 weld=
ing cable=20
with new crimped
connectors and clean, bare metal attachment points
replaced ignition switch (twice=E2=80=A6 first with import then with oem sw=
itch)
replaced coil and distributor with MSD system with spark control box, separ=
ate=20
coil and distributor=E2=80=A6
it was taken from running vehicle. It's doing the same thing as the origi=
nal ignition system.
Replaced complete wiring harness=E2=80=A6headlight to taillight with new Au=
towire harness=E2=80=A6including all
Switches and relays. Professionally done.
Everything else electrical works without a glitch=E2=80=A6 we are at the w=
all here=E2=80=A6
=20
Ideas, suggestions, calculated wild a** guesses welcomed=E2=80=A6 =20
thanks
=20
john
_______________________________________________
Shop-talk@autox.team.net
Archive: http://www.team.net/pipermail/shop-talk http://autox.team.net/arch=
ive
gageek.com
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<META name=3DGENERATOR content=3D"MSHTML 11.00.10570.1001"></HEAD>
<BODY>
<DIV><FONT face=3D"Segoe UI">Hey Moose, thanks for the reply. Harness=
was done by a pro that does it for a living...He is meticulous. He c=
ompletely strips everything</FONT></DIV>
<DIV><FONT face=3D"Segoe UI">from the car then starts from a blank slate...=
Everything new.. Nice looms and grommets at every hole and hides as much o=
f it as he can.</FONT></DIV>
<DIV><FONT face=3D"Segoe UI"></FONT> </DIV>
<DIV><FONT face=3D"Segoe UI">Every component was new and oem or better... n=
o import crap. I'm of the same opinion as you afa a short to gr=
ound but it's gotta be hidden inside something</FONT></DIV>
<DIV><FONT face=3D"Segoe UI">that we can't see.</FONT></DIV>
<DIV><FONT face=3D"Segoe UI"></FONT> </DIV>
<DIV><FONT face=3D"Segoe UI">Someone on my ford forum suggested putting a v=
olt meter in the circuit and watch the voltage for a drop...but you're so b=
usy trying to get out of traffic and not</FONT></DIV>
<DIV><FONT face=3D"Segoe UI">get plowed it's difficult to remember to watch=
the meter.... and yes this has been going on for over a year..=
=2Eintermittently and even after all the changes... it persists</FONT></DIV=
>
<DIV><FONT face=3D"Segoe UI"></FONT> </DIV>
<DIV><FONT face=3D"Segoe UI">john</FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE style=3D"PADDING-BOTTOM: 0px; PADDING-TOP: 0px; PADDING-LEFT: 0=
=2E5em; BORDER-LEFT: #c7e5ff 1px solid; MARGIN: 0px 0px 0px 0.5em; PADDING-=
RIGHT: 0px">
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Segoe UI'; COLOR: #000000"><B>=
----- Original Message -----</B></DIV>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Segoe UI'; COLOR: #000000"><B>=
From:</B> <<A href=3D"mailto:eric@megageek.com";>eric@megageek.com</A>>=
;</DIV>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Segoe UI'; COLOR: #000000"><B>=
To:</B> shop-talk <<A href=3D"mailto:shop-talk@autox.team.net";>shop-talk=
@autox.team.net</A>></DIV>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Segoe UI'; COLOR: #000000"><B>=
Cc:</B> john niolon <<A href=3D"mailto:jniolon@att.net";>jniolon@att.net<=
/A>></DIV>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Segoe UI'; COLOR: #000000"><B>=
Sent:</B> 05/19/2026 4:40:59 PM</DIV>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Segoe UI'; COLOR: #000000"><B>=
Subject:</B> Re: [Shop-talk] strange automotive electrical problem</DIV>
<HR style=3D"BORDER-TOP: medium none; HEIGHT: 1px; BORDER-RIGHT: medium non=
e; BORDER-BOTTOM: medium none; COLOR: #ccc; BORDER-LEFT: medium none; BACKG=
ROUND-COLOR: #ccc">
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Segoe UI'; FONT-WEIGHT: normal=
; COLOR: #000000; FONT-STYLE: normal"><SPAN style=3D"FONT-SIZE: 10pt; FONT-=
FAMILY: sans-serif">John, I would have bet money it was a hidden wire short=
somewhere. It had all the Hallmarks. But you stated the wiring harne=
ss what completely replaced. So, that rules that out...</SPAN> <BR><BR><SPA=
N style=3D"FONT-SIZE: 10pt; FONT-FAMILY: sans-serif">Or does it?</SPAN> <BR=
><BR><SPAN style=3D"FONT-SIZE: 10pt; FONT-FAMILY: sans-serif">My question, =
when you said 'headlight to taillight', that is complete. BUT was the=
re ANY wire that was in that car that wasn't part of the harness?</SPAN> <B=
R><BR><SPAN style=3D"FONT-SIZE: 10pt; FONT-FAMILY: sans-serif">Something in=
dash, neutral switch, tranny indicator, or some other component?</SPAN> <B=
R><BR><SPAN style=3D"FONT-SIZE: 10pt; FONT-FAMILY: sans-serif">I'm still be=
tting on a wire short, but I guess it could be a short inside a component. =
Maybe inside the alt or other part?</SPAN> <BR><BR><SPAN style=3D"FON=
T-SIZE: 10pt; FONT-FAMILY: sans-serif">BTW, I'm assuming it was doing this,=
before you did all these mods, right? </SPAN><BR><BR><SPAN style=3D"FONT-S=
IZE: 10pt; FONT-FAMILY: sans-serif">Anyway, that is a stumper.</SPAN> <BR><=
BR><SPAN style=3D"FONT-SIZE: 10pt; FONT-FAMILY: sans-serif">Moose</SPAN> <B=
R><BR><BR><BR><SPAN style=3D"FONT-SIZE: 9pt; FONT-FAMILY: sans-serif; COLOR=
: #5f5f5f">From: </SPAN><SPAN style=3D"FONT-SIZE=
: 9pt; FONT-FAMILY: sans-serif">"john niolon" <jniolon@att.net></SPAN=
> <BR><SPAN style=3D"FONT-SIZE: 9pt; FONT-FAMILY: sans-serif; COLOR: #5f5f5=
f">To: </SPAN><SPAN style=3D"FONT-SIZE: 9pt; FON=
T-FAMILY: sans-serif">"shop-talk" <shop-talk@autox.team.net></SPAN> <=
BR><SPAN style=3D"FONT-SIZE: 9pt; FONT-FAMILY: sans-serif; COLOR: #5f5f5f">=
Date: </SPAN><SPAN style=3D"FONT-SIZE: 9pt; FONT=
-FAMILY: sans-serif">05/19/2026 13:16</SPAN> <BR><SPAN style=3D"FONT-SIZE: =
9pt; FONT-FAMILY: sans-serif; COLOR: #5f5f5f">Subject: =
</SPAN><SPAN style=3D"FONT-SIZE: 9pt; FONT-FAMILY: sans-serif">[Shop=
-talk] strange automotive electrical problem</SPAN> <BR><SPAN style=3D"FONT=
-SIZE: 9pt; FONT-FAMILY: sans-serif; COLOR: #5f5f5f">Sent by: =
</SPAN><SPAN style=3D"FONT-SIZE: 9pt; FONT-FAMILY: sans-serif=
">"Shop-talk" <shop-talk-bounces@autox.team.net></SPAN> <BR>
<HR noShade>
<BR><BR>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">Strange automotive electrical problem we need h=
elp with=E2=80=A6</SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">55 chevy automatic with 383 stroker motor, carb=
ed, p/s,p/b,a/c</SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">Dakota digital dash system including neutral sa=
fety switch and</SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">Transmission gear indicator</SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri"></SPAN> </P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">When it is running right, it=E2=80=99s scary st=
rong. Cruises nicely.</SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri"></SPAN> </P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">Problem=E2=80=A6 when driving the engine dies l=
ike you cut it off=E2=80=A6BUT will start back up</SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">Immediately and run perfectly till the next tim=
e it does it. Might be 15 minutes=E2=80=A615 days or</SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">three month later. Might do it 4 times in a row=
or once and not repeat. Speed does not effect it. </SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">Engine temp does not effect it=E2=80=A6 d=
oes it hot or cold. With the a/c on or off. It does not have a</SPAN>=
</P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">Cutoff switch in the system. Longest peri=
od with no failure is 7 months=E2=80=A6 shortest was 4 minutes.</SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri"></SPAN> </P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">When it stalls we checked fuel by looking in th=
e bowl of carb and gas is spraying as it should</SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">So we are assuming electrical of some sort. &nb=
sp;So far we=E2=80=99ve done the following=E2=80=A6</SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri"></SPAN> </P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">Replaced battery with new red top optima batter=
y and all new battery cables (2 gauge I think)</SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">Replaced all ground cables frame/block=E2=80=A6=
frame/chassis with 2/0 welding cable with new crimped</SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">connectors and clean, bare metal attachment poi=
nts</SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">replaced ignition switch (twice=E2=80=A6 first =
with import then with oem switch)</SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">replaced coil and distributor with MSD system w=
ith spark control box, separate coil and distributor=E2=80=A6</SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">it was taken from running vehicle. It's d=
oing the same thing as the original ignition system.</SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">Replaced complete wiring harness=E2=80=A6headli=
ght to taillight with new Autowire harness=E2=80=A6including all</SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">Switches and relays. Professionally done.</SPAN=
></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">Everything else electrical works without a glit=
ch=E2=80=A6 we are at the wall here=E2=80=A6</SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri"></SPAN> </P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">Ideas, suggestions, calculated wild a** guesses=
welcomed=E2=80=A6 </SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">thanks</SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt"></SPAN> </P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri">john</SPAN></P>
<P style=3D"MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><SPAN style=3D"FONT-SIZE: =
12pt; FONT-FAMILY: Calibri"> </SPAN><TT><SPAN style=3D"FONT-SIZE: 10pt=
">_______________________________________________<BR><BR>Shop-talk@autox.te=
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Shop-talk@autox.team.net
Archive: http://www.team.net/pipermail/shop-talk http://autox.team.net/archive
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