<span style=" 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 harness what completely replaced. So, that
rules that out...</span>
<br>
<br><span style=" font-size:10pt;font-family:sans-serif">Or does it?</span>
<br>
<br><span style=" font-size:10pt;font-family:sans-serif">My question, when
you said 'headlight to taillight', that is complete.  BUT was there
ANY wire that was in that car that wasn't part of the harness?</span>
<br>
<br><span style=" font-size:10pt;font-family:sans-serif">Something in dash,
neutral switch, tranny indicator, or some other component?</span>
<br>
<br><span style=" font-size:10pt;font-family:sans-serif">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?</span>
<br>
<br><span style=" font-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=" font-size:10pt;font-family:sans-serif">Anyway, that is
a stumper.</span>
<br>
<br><span style=" font-size:10pt;font-family:sans-serif">Moose</span>
<br>
<br>
<br>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">From:
       </span><span style=" font-size:9pt;font-family:sans-serif">"john
niolon" <jniolon@att.net></span>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">To:
       </span><span style=" font-size:9pt;font-family:sans-serif">"shop-talk"
<shop-talk@autox.team.net></span>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">Date:
       </span><span style=" font-size:9pt;font-family:sans-serif">05/19/2026
13:16</span>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">Subject:
       </span><span style=" font-size:9pt;font-family:sans-serif">[Shop-talk]
strange automotive electrical problem</span>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">Sent
by:        </span><span style=" font-size:9pt;font-family:sans-serif">"Shop-talk"
<shop-talk-bounces@autox.team.net></span>
<br>
<hr noshade>
<br>
<br>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">Strange
automotive electrical problem we need help with…</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">55
chevy automatic with 383 stroker motor, carbed, p/s,p/b,a/c</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">Dakota
digital dash system including neutral safety switch and</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">Transmission
gear indicator</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">When
it is running right, it’s scary strong.  Cruises nicely.</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">Problem…
when driving the engine dies like you cut it off…BUT will start back up</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">Immediately
and run perfectly till the next time it does it.  Might be 15 minutes…15
days or</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" 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="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">Engine
temp does not effect it…  does it hot or cold. With the a/c on or
off.  It does not have a</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">Cutoff
switch in the system.  Longest period with no failure is 7 months…
shortest was 4 minutes.</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">When
it stalls we checked fuel by looking in the bowl of carb and gas is spraying
as it should</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">So
we are assuming electrical of some sort.  So far we’ve done the following…</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">Replaced
battery with new red top optima battery and all new battery cables (2 gauge
I think)</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">Replaced
all ground cables frame/block… frame/chassis with 2/0 welding cable with
new crimped</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">connectors
and clean, bare metal attachment points</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">replaced
ignition switch (twice… first with import then with oem switch)</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">replaced
coil and distributor with MSD system with spark control box, separate coil
and distributor…</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">it
was taken from running vehicle.  It's doing the same  thing as
the original ignition system.</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">Replaced
complete wiring harness…headlight to taillight with new Autowire harness…including
all</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">Switches
and relays. Professionally done.</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">Everything
else electrical works without a glitch…  we are at the wall here…</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">Ideas,
suggestions, calculated wild a** guesses welcomed…   </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">thanks</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri">john</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri"> </span><tt><span style=" font-size:10pt">_______________________________________________<br>
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