Re: Heater Blower Resistor?

[Derrick Brown <derrickb@xxxxxxx>]

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i checked continuity on this switch.
the center terminal does ground to the case.
\
the other two terminals do not show continuity to ground.

so this should be the culprit???????


On May 13, 2005, at 8:47 PM, Dave Krugler wrote:

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> I suppose the blower speed switch could also be shorted to ground  
> due to internal overheat and failure.  If you have access to a volt/ 
> ohm meter or even a test light you could check that fairly easily.   
> There should be no continuity between any terminal on the back of  
> the blower speed switch and ground.  If you connect 1 side of a  
> 12volt lamp to battery voltage in the car and remove the wir  
> harness plug from back of the blower speed switch while still  
> mounted in the instrument panel you could touch the other lead of  
> the test light to one terminal at a time and see if the bulb  
> lights.  If it does and you aren't otherwise touching ground the  
> switch is shorted internally to ground.
>
>
> > From: Derrick Brown <derrickb@xxxxxxx>
> > Reply-To: 1962to1965mopars@xxxxxxxxxx
> > To: 1962to1965mopars@xxxxxxxxxx
> > Subject: Re: Heater Blower Resistor?
> > Date: Fri, 13 May 2005 14:48:40 -0400
> >
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> > Erase wrinkles without painful injections with Nexiderm SP.
> > Nexiderm SP is clinically proven to reduce wrinkles by 68% Click  
> > here to get your 30-day free supply.
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> >
> > > Hi Dave,
> >
> > Thanks,  funny thing is switch runs blower blower  "slowest" on  
> > the  HIGH setting (of the switch) and speeds up on low setting of  
> > the  switch.  if you try to go to the off position on the switch,  
> > see ya,  the fuse blows.
> >
> > Yet now all positions seem to blow the fuse, im wondering if the   
> > heater control switch is the actual culprit?
> >
> > thanks again,
> >
> >
> > > The usual thing that fail these is either high current load from  
> > > a  bound up or shorted blower motor or locked rotor (motor locked  
> > > up  by debris/bearing failure or whatever) which not only  
> > > increases the  current draw but does not blow any cooling air  
> > > across the resistor  coils.  If it is possible for an overheated  
> > > resistor coil to sag  onto the metal case of the heater and make  
> > > a circuit that could  cause fuses to blow.
> > >
> > >
> > >
> > > > From: Derrick Brown <derrickb@xxxxxxx>
> > > > Reply-To: 1962to1965mopars@xxxxxxxxxx
> > > > To: 1962to1965mopars@xxxxxxxxxx
> > > > Subject: Heater Blower Resistor?
> > > > Date: Fri, 13 May 2005 09:18:43 -0400
> > > >
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> > > > hi,
> > > >
> > > > has anyone ever had one of these go bad?
> > > >
> > > > i think it may be a source of blowing fuses to the heater  
> > > > blower  as I  increase the speed selector on the fan switch.
> > > >
> > > >
> > > >
> > > > if so, does anyone have one they know is good that they would sell?
> > > >
> > > > contact me offlist if you have one to sell.
> > > >
> > > > thanks
> > > >
> > > > Derrick
> > > > derrickb@xxxxxxx
> > > > '63 Sport Fury
> > > >
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> > Derrick
> > derrickb@xxxxxxx
> > '63 Sport Fury
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> > mail and fine tune the content signal to Mopar topic.  Thanks!
> >
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>
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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:
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>
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Derrick
derrickb@xxxxxxx
'63 Sport Fury

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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. 


bOyW3N.