[Tigers] Electrical short during start attempt

[Gary]

Good point Brian.
Is this car freshly restored and you didn’t
want to scratch the carefully applied extra
thick powder cat?
Gary

Sent from my iPhone

> On Jul 23, 2018, at 5:05 PM, Brian Glenn <ora_archy at yahoo.com> wrote:
> 
> A solid connection does not necessarily equate to a good ground.
> Just saying.
> B
> 
> Brian Glenn
> 
> B9470208LRXFE GT
> B9471101LRXFE 
> B9472615LRXFE 
> B382000846LRXFE 
> B382001212LRXFE
> 
> 
> On Monday, July 23, 2018, 2:18:00 PM PDT, Gary Winblad via Tigers <tigers at autox.team.net> wrote:
> 
> 
> Humm..  strange then.
> Could the burned black wire have been burned previously?
> Gary
> 
> On 7/23/2018 7:49 AM, Gharlowe wrote:
> > Thanks, Gary.  I’ll check again, but the ground strap was bolted tightly at both ends and wasn’t broken.  I gave it a good tug.
> >
> > Sent from my iPhone
> >
> >> On Jul 23, 2018, at 10:02 AM, Gary Winblad <garywinblad at comcast.net> wrote:
> >>
> >> Graham,
> >> The loose ground in the trunk WILL prevent it from starting.
> >> BUT your problem is the ground strap on the engine.
> >> Make sure it connects from the engine to the chassis (the old Alpine tranny mount threaded hole).
> >> It must be loose or connected wrong to burn the small black wire.
> >> It is straightforward, really only as complicated as a flashlight ;-)
> >> Gary
> >>
> >>
> >>> On 7/22/2018 11:03 AM, Graham Harlowe via Tigers wrote:
> >>>
> >>> Thank you all for the replies. (I knew I should have paid more attention
> >>> during those EE classes!)  The starter circuit seems pretty straight
> >>> forward:  heavy gauge positive cable from the battery to the starter
> >>> solenoid and then to the starter/engine block.  The circuit is closed via
> >>> the ground strap from the engine block to the chassis at the clutch slave
> >>> cylinder and then from the chassis to the battery negative terminal via the
> >>> short cable at the trunk bulkhead.
> >>>
> >>> The "two" ground wires that fried are actually two ends of the same wire.
> >>> The wire enters the harness from the ballast resistor (chassis mount), does
> >>> a 180 inside the harness, and exits the loom with the sending unit wire
> >>> (block mount).  As others have said, when the heavy gauge starter circuit is
> >>> open, the power seeks another ground path and the light gauge ground wire
> >>> between chassis and block couldn't carry the load.
> >>>
> >>> I found the ground strap at the slave cylinder was intact with good
> >>> connections.  I'll remove and clean up the contacts to be sure.  The battery
> >>> cable at the trunk bulkhead wasn't tight.  I'll tighten that connection and
> >>> hope that was the primary problem.
> >>>
> >>>  Let me know if there are any other places to look or items to check.
> >>>
> >>> Thanks again,
> >>>
> >>> - Graham
> >>>
> >>>
> >>>
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