On Sat, Jul 28, 2012 at 6:54 AM, David Beierl <dbeierl@attglobal.net> wrote:

>
> See if those dark marks don't match the contour of the black rubber
> grommets.  I'm still going for plasticisers in the harness cover leaching
> plasticiser/whatever out of the grommets.  As an experiment, set a clothes
> iron on low and see what happens if you overheat a bit of that cover.  I'm
> betting you'll see it melt and flow rather than blacken.

>>  I guess it can't hurt to double check the FI wires as they show
>> a little heat damage too.
>
>
> Neil, if the wires had gotten hot you'd see melting, not browning.  They're
> ordinary vinyl-covered wires and they'll melt and stick together long before
> they get brown.

Ah ok. I see what you mean. Both sides of the cover are the same
colour. Grommet material must've leached past the grey cover and into
a fuel injector wire casing.

>> The wires to the B+ post inside the junction box looked OK but a fuse
>> sounds like a good idea.
>
>
> They're fine, plenty big, no problem at all - until you get a short.  At
> that point you've just connected the battery to ground through whatever
> little wire in the harness got shorted to ground.  Since everything as far
> as that B+ post is honking big, guess which part smokes and melts the whole
> harness together...

For sure. I get it.    :)

Maybe the nut on the stud can vibrate loose? Or other wires rub on
stud end, get down to copper, "fzzzzap" ?

Neil.

--
Neil n

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