[DeTomaso] Factory Shunt? was Re: Ammeter, was Re: Key difficult to turn
Will Kooiman
will.kooiman at gmail.com
Tue Oct 16 09:26:53 EDT 2012
I highly recommend too. Very nice part.
On 10/16/12 8:24 AM, "Brian" <bd8134 at gmail.com> wrote:
>
>My 1978 Pantera did not have an external shunt either.
>I have posted my ammeter's demise and dissection here,
>http://www.poca.com/index.php/gallery/?g2_itemId=38317
>
>I replaced it with a new ammeter from Hall Pantera. It is plastic with a
>plastic mounting bracket, very nice.
>
>One way to limit the amperage going through the ignition switch is using
>Pantera Electronics ignition switch controller.
>I used an older model than is not on Jon's website, mine does not have
>the push button start function.
>Highly recommend.
>
>
>On Oct 16, 2012, at 9:01 AM, cengles at cox.net wrote:
>
>> Dear Thomas,
>>
>>
>>
>> I don't recall a factory external shunt on the
>>ammeters on my two July 1974 Panteras, either.
>>
>>
>> Warmest regards, Chuck Engles
>>
>>
>> On Tue, Oct 16, 2012 at 12:59 AM, Thomas Tornblom wrote:
>>
>>> No external shunt on my stock Veglia ammeter, 1984 GT5.
>>>
>>> Thomas
>>>
>>> 2012-10-16 04:40, MikeLDrew at aol.com skrev:
>>>>
>>>> In a message dated 10/15/12 17 43 23, guido_detomaso at prodigy.net
>>>>writes:
>>>>
>>>>
>>>>> There was a factory shunt? Guess I missed a few episodes here...my
>>>>>car
>>>>> is a '73
>>>>> though.
>>>>>
>>>>>>> Check out this photo:
>>>>
>>>> http://www.poca.com/index.php/gallery/?g2_itemId=38308
>>>>
>>>> The interesting part (the shunt) is unfortunately a bit out of focus.
>>>> This is a NOS ammeter that I lifted out of a Ford box. It's my
>>>>understanding
>>>> that this external shunt was standard. I think the ammeter in my
>>>>'72 also
>>>> has this shunt installed. Note that it's electrically hot all the
>>>>time and
>>>> completely lacking any insulation. DOH!
>>>>>
>>>>>> The shunt I took off I made long ago, before the internet. The
>>>>>>needle
>>>>> stopped
>>>>> moving over time, something I wanted to address. But a shunted
>>>>>gauge with
>>>>> a
>>>>> non-moving needle beats walking home.
>>>>>
>>>>>>> Indeed.
>>>>>
>>>>>> And so am starting to question the wisdom of this whole project.
>>>>>
>>>>>>> As am I. I suspect your original shunt was too shunty; that is,
>>>>>>>too
>>>> much power was going past the gauge instead of through it. You can
>>>>see the
>>>> original one is just a thin piece of brass.
>>>>
>>>>
>>>>>> Has anyone
>>>>> used the existing red wire off the ignition switch, that powers
>>>>> everything(?)
>>>>> that goes on and off with the key, to only trip a relay, switching
>>>>>power
>>>>> from a
>>>>> new third wire off the ammeter?
>>>>>
>>>>>>>> I *think* that this is the scheme that Rick Moseley's relay kit
>>>>>>>>uses,
>>>> although he ties into the fusebox, not the ignition switch. But I
>>>>think what
>>>> he does is have you unplug the red wire (that goes from the ignition
>>>>switch
>>>> to the fusebox) and plug it into one of his wires, which then goes to
>>>>a
>>>> relay, and the output from the relay then goes to the fusebox where
>>>>the
>>>> original red wire hooked up. I *think*.
>>>>
>>>>>> Taking just the fan current out of the ignition switch doesn't take
>>>>>>all
>>>>> the
>>>>> current away, as I'm finding out.
>>>>>
>>>>>>> True dat. But it certainly removes the largest consumers...
>>>>
>>>> Mike
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>>>
>>>
>>> --
>>> Real life: Thomas Törnblom Email: thomas at hax.se
>>> Snail mail: Banvallsvägen 14 Phone: +46 18 32 31 18
>>> S - 754 40 Uppsala, Sweden Mobile: +46 76 209 8320
>>>
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