Re: wiring harnesses

[Dave Casey <dcasey@xxxxxxxxxxxxx>]

I did exactly that on my '65 Polara, but I did it using another temperature 
gauge to replace the ammeter. I swapped the ammeter face on to the extra 
temp gauge, mounted the extra temp gauge where the ammeter used to go, and 
used the right size resistor to limit the voltage across the temperature 
gauge (because full battery voltage will burn out these movements).
That being said, it's not the simplest thing in the world, especially if 
you're not good with electronics (you at least need to be able to use Ohm's 
law to essentially calibrate the movement and chose a resistor size). 
However, since the temperature sending units are all the same (right?) that 
would mean you could use the same resistor I did with an extra temperature 
gauge to get the same effect. However you should know that you still have to 
fine tune the gauge with the mechanical adjustments so that it reads where 
you want it to.
Let me know if you're interested and I'll dig up a resistor value and a 
wiring diagram.

Dave Casey

----- Original Message ----- 
From: "Paul Lennemann" <pjlenn@xxxxxxxxx>
To: <1962to1965mopars@xxxxxxxxxx>
Sent: Sunday, March 23, 2008 11:44 AM
Subject: RE: wiring harnesses


> Sean B wrote:
> > Gary, two things I should have mentioned:
> >
> > 1.  Be sure to use a fusible link whenever adding a second charging wire
> >
> > to a car.  Even though you are splitting the charging juice, select a
> > gauge of wire rated for the particular alternator's full output, and a
> > gauge for the fusible link that belongs with that wire.  Four gauges
> > higher (thinner) for the fusible link.
> >
> > 2.  I don't think that we need anything over, say, 50 amps with our
> > cars, unless they have A/C, probably.  I thought I might use an electric
> >
> > fuel pump and electric fans on my car, which I didn't.  I'm not sure how
> >
> > much alternator power is required for these accessories.  Maybe someone
> > else can answer that?
> >
> > Sean
>
> I have a question to add to this discussion.  We've talked before about
> switching this system from amperage to voltage.  And there is a good
> tech article about the swap.  One thing that is not addressed clearly is
> the gauge.  I'm guessing that it's necessary to use a replacement gauge.
> On my '63 I think that would be a fairly simple swap as the small
> gauges seem to be the same size as modern replacement gauges.  However,
> if a guy wanted to keep his original gauge, I'm wondering it it would be
> possible to retro fit the faceplate and needle onto a modern gauge or
> somehow change to guts to convert it to a gauge that reads voltage
> instead of amperage?  Has anyone tried this?
>
> Paul L.
> '63 Sport Fury
> 440/727
> http://www.1962to1965mopar.ornocar.org/ml-lennemann63.html
>
>
> ----
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----
Please address private mail -- mail of interest to only one person -- directly to that person.  I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic.  Thanks!

'62 to '65 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html.