Ferrari Mailing List: Re: More Stereo Installation & Wiring Expertise Needed

[Doug and Terri Anderson (dnt]

Good points Todd.  I am taking notes.

Hey Rob - I'm with ya on the electrical stuff.  If you can't see it, it must 
not exist.  Spent many horrible night staring at the ceiling when trying to 
replace the butchered wire job the previous owner had done putting in a 
Bulldog alarm system in our 69 Porsche 912 in the early 70s.  That high tech 
alarm was one of those things that has a bouncy weighted spring to make 
contact with if the car is monkeyed with or a door is opened and honked the 
horn.  Anytime it was off half of the interior lights wouldn't work.  Funny 
thing about electricity - its happy moving in both directions unless you put 
a diode in the stream - - - I think.  heh heh

Good luck on this venture - I am following your story as our 82 911SC door 
speakers have never worked (only the rear 4 ohm ? rears wired together) and 
now, after 10 years of that nonsense, the whole thing has gone kaput.  So I 
too have a project in waiting.
Onward
DOUG

----- Original Message ----- 
From: "Todd Walke" <racertod [at] racertodd.com>
To: "DOUG" <dnt [at] dock.net>
Cc: "The FerrariList" <ferrari [at] ferrarilist.com>
Sent: Sunday, April 26, 2009 11:27 PM
Subject: Re: [Ferrari] More Stereo Installation & Wiring Expertise Needed


> Robert wrote:
>
> > I am no electrical expert and am having a real hard time with this
> > but, when I turn the car off or hook up the power to the factory
> > always on wire the unit works great all the way up to max volume with
> > no "Protect" warning its only when the cars ignition circuit is
> > activated it shows a short.
>
>         Well, since the manual says that the Protect warning is only for
> speaker shorts I'd start by disconnecting all the speaker wires, then
> adding them one at a time.  Even though you used new wires, it's possible
> that a wire got pinched in the door jamb, or the insulation got damaged
> when threading a wire though the body or a terminal is touching the body
> and grounding.
>         If you get Protect even with all the speakers disconnected, then
> I'd investigate your red and yellow power leads.  Maybe some sort of weird
> ignition interference on one of those wires is freaking out the radio.
>
>         Do this experiment: temporarily run both red and yellow to the
> battery directly and see if you get the Protect with the car running.  If
> you don't, hook up your speaker wires.  If you still don't get the warning
> with the car running, then the problem lies in where you are hooking up 
> the
> red and yellow power wires.
>
>         Were it my car, my preference would be to run the yellow wire
> directly to the battery with a fuse inline.  Second choice would be to run
> that wire to the fusebox, tapping off the main wire the brings power from
> the battery, again with an inline fuse.  That way you're bypassing the
> whole fusebox.
>         For the red wire, I'd prefer to tap directly into the ignition
> switch, again bypassing any fusebox circuits.  I'm not familiar with the
> GT4 wiring, but there is likely a wire from the ignition switch to the
> fusebox that is only hot when the ignition is on, my second choice would 
> be
> to tap it there.
>
> > If there was some kind of short wouldn't the unit give the
> > same warning straight from the battery??????
>
>         You'd think so, but sometimes even older, simple cars can do wacky
> stuff.  In an older car, you never know what butcher has worked on the
> electricals before you.
>
>
> Todd
> Seattle,WA
> '86 GTI, Red of course. (exciting racey car) 268,000 miles
> '01 Golf TDI, silver.   (new work car)       202,000 miles
> '87 Golf, Polar Silver. (retired work car)   654,000 miles <- Gone to a 
> new
> home :(
> http://www.pureluckdesign.com <-Ferrari & VW stuff
>
>
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