Re: [DML] Ground Bus
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Re: [DML] Ground Bus



I remember reading in Stainless Steel Illusion that the electrical wiring harness was redesigned after the car was in production because of the electrical problems that had been reported.

Gary Masie

----- Original Message -----
From: content22207 
Date: Friday, March 23, 2012 11:44 am
Subject: Re: [DML] Ground Bus
To: dmcnews@xxxxxxxxxxxxxxx

> Of course not -- I dared you all not to.
> 
> That, and the fact that these little cars are an indisputable 
> electrical mess as built. There is not a single person out there 
> willing to defend DeLorean electrical systems because their 
> inherent weaknesses are apparent even to owners who have not yet 
> had something melt or catch fire. Whatever else you want to say 
> about a DeLorean, from an electrical standpoint, they suck (as built).
> 
> As much as I hate to, I will go back to DMCTalk and re-read that 
> thread. I seem to remember some posters arguing that the 
> electrical harness must have changed after 1981 because they 
> were having a hard time finding that hidden junction (palpable 
> nonsense of course -- 1982's and 1983's were built with leftover 
> 1981 parts). 
> 
> Bill Robertson
> #5939
> 
> 
> --- In dmcnews@xxxxxxxxxxxxxxx, Marc Levy wrote:
> >
> > Grounds have a funny way of working. There are other ground 
> paths, even through the radio (like, the antenna).. Like I said, 
> I am not questioning your work here, just speaking of my experiences.
> > 
> > But, my initial question is still unanswered. 
> > 
> > Have you been chastised for this "ground bus"? Has anyone 
> found fault with it? 
> > 
> > 
> > --- On Fri, 3/23/12, content22207 wrote:
> > 
> > > From: content22207 
> > > Subject: Re: [DML] Ground Bus
> > > To: dmcnews@xxxxxxxxxxxxxxx
> > > Date: Friday, March 23, 2012, 11:15 AM
> > > The only way that could help is if
> > > the car is having problems with its bulkhead bolt to frame
> > > wire (the 6 gauge wire that runs from behind the coil to
> > > underneath the coolant expansion tank), and even then the
> > > effect would be minimal because the radio bracket is only
> > > connected to the foremost console junction by a single 16
> > > gauge wire -- there is no other ground connection to the
> > > radio bracket, and the radio bracket is of course
> > > electrically isolated from the frame.
> > > 
> > > Speaking of which: everything from the rear bulkhead forward
> > > (including everything in back of the car grounded via the
> > > bulkhead connectors) is totally dependent upon the bulkhead
> > > bolt to frame wire mentioned above. Degradation in it is
> > > almost as bad as degradation of the frame to battery wire.
> > > 
> > > My bus ties the bulkhead bolt into the battery via another
> > > path (a larger gauge path) so that wire is rendered moot.
> > > I've left it in place of course, but if it ever degrades or
> > > fails, I will never even know it because the car will still
> > > function electrically normally.
> > > 
> > > Anyway, I 100% assure you the instrument cluster and
> > > binnacle are grounded at that hard to see junction. Every
> > > owner who has looked for it found it eventually. Perhaps
> > > Harold could take a picture of it on his bare wiring
> > > harness.
> > > 
> > > Any owner can easily trace the wires on his or her radio
> > > bracket to see that they only go to the radio itself and a
> > > couple of noise reduction capacitors, and of course one
> > > small gauge wire out. Even the A/C panel illumination bulbs
> > > which sit in the radio bracket are not grounded via the
> > > radio bracket.
> > > 
> > > Bill Robertson
> > > #5939
> > > 
> > > 
> > > 
> > > --- In dmcnews@xxxxxxxxxxxxxxx,
> > > Marc Levy wrote:
> > > >
> > > > I was not looking for people to find faults with it, I
> > > was seriously asking if Bill had gotten negative feedback on
> > > THIS specific modification.
> > > > 
> > > > Bill's work tracing down the wiring harness, and
> > > sharing it with us was very useful.  It still makes me
> > > wonder why on most of the cars that I have added a ground
> > > wire from the radio bracket to the frame have gotten
> > > improved results on the dashboard (lights/gages), but I have
> > > no reason to doubt his findings.  Adding that ground
> > > may give some other ground path between the harness and the
> > > frame a lower path of resistance that has not been
> > > considered??  Either way, it would be hard to dispute
> > > that adding an actual large gage copper wire from the ground
> > > splice direct to the battery would have a negative
> > > impact...  which brings me to my initial
> > > question-  Has anyone found fault with this?
> > > > 
> > > > 
> > > > --- On Fri, 3/23/12, Stephen Rice 
> > > wrote:
> > > > 
> > > > > From: Stephen Rice 
> > > > > Subject: Re: [DML] Ground Bus
> > > > > To: dmcnews@xxxxxxxxxxxxxxx
> > > > > Date: Friday, March 23, 2012, 10:19 AM
> > > > > Rats are more likely to be sucessful
> > > > > at chewing away a copper wire
> > > > > than they would be at chewing a steel frame in
> > > half. 
> > > > > If you
> > > > > disconnect your frame ground you will have a
> > > serious problem
> > > > > when a
> > > > > rat decides to chomp the ground bus in half.
> > > > > 
> > > > > -- 
> > > > > Steve Rice
> > > > > #16510
> > > > > 
> > > > > On Fri, Mar 23, 2012 at 8:41 AM, Marc Levy
> > > 
> > > > > wrote:
> > > > > > Just curious Bill, has anyone found fault
> > > with your
> > > > > "ground bus" modification?
> > > > > >
> > > > > >
> > > > > 
> > > > > 
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> > > > > 
> > > > >
> > > >
> > > 
> > > 
> > > 
> > > 
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> > > 
> > >
> >
> 
> 
>


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