Re: melted heater switch--HELP!

[Dave Krugler <dkrugler@xxxxxxx>]

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The heater blower switch is not intended to be wired to the ballast 
resistor.  Ballast resistor is ignition circuit only and is mounted on the 
firewall.  There is, however, on the left end of the heater case, a resistor 
with a 3 or 4 wire connector on it that steps the battery voltage down to 
give lo, medium blower speeds working thru the blower switch.  Hi blower is 
battery direct.  If intermediate or low blower speeds don't work the blower 
resistor probably has a coil or 2 burned out and will have to be replaced.  
These blower switches over heat when the contacts get dirty with age or if 
something happens to raise the operating current of the blower motor like a 
bound up motor or leaves or other debris in the blower scroll or motor 
commutator shorting from carbon buildup in the slots between the commutator 
contact strips.  If you have the motor out it should spin absolutely freely 
by hand and since it is out a couple of drops of 3in1 electric motor oil on 
the shaft bearings wouldn't hurt it.  Then I would say if there is nothing 
else wrong replacing the switch outright with one with clean healthy 
contacts may be the solution.  If nothing else try to find another used one 
and carefully dis-assemble it and if there is littl or no sign of over 
heating clean the contacts up good with fine steel wool (make certain you 
get all of the steel wool fibers out of the switch before re-assembly or it 
will short) then put a dab of light grease on the bearing surfaces (not the 
contacts) and re-assemble it.

> From: Tom Duross <tduross1@xxxxxxxxxxx>
> Reply-To: 1962to1965mopars@xxxxxxxxxx
> To: 1962to1965mopars@xxxxxxxxxx
> Subject: Re: melted heater switch--HELP!
> Date: Thu, 14 Jul 2005 14:16:33 -0400
>
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> Sean-
>
> I blew out my wiper switch due to a bad regulator.
> I had 18 volts when I checked it, it also took out the battery, boiled it.
> Might be worth looking at.
>
> Tom
>
> ----- Original Message ----- From: "Jim Jablonski" <jim@xxxxxxxxxxxxx>
> To: <1962to1965mopars@xxxxxxxxxx>
> Sent: Thursday, July 14, 2005 11:55 AM
> Subject: RE: melted heater switch--HELP!
>
>
> Hi Sean,
>
> I am not home, so I don't have a wiring schematic with me, and I don't
> recall if the heater switch is part a circuit connected to the resistor
> (doesn't sound right, but who knows).  I was just thinking about your
> noting that the wire from the resistor was melted.
>
> Regards,
>
> Jim Jablonski
> Royal Oak, Michigan
> '64 Fury
> Sean Bolter wrote:
> > Thanks for replying, Jim!
> >
> > The ballast resistor was on the car when I bought it, and everything
> > seemed to work fine.  Do you think that might be the problem?
> >
> > Sean
> >
> > Jim Jablonski wrote:
> > >
> > > Sean,
> > >
> > > This is just a guess, and probably an obvious one at that, but often 
> > the
> > >
> > >
> > > obvious is overlooked ...
> > >
> > > Have you changed the ballast resistor recently?  Perhaps the wrong
> > > resistor was installed ... or is faulty ... and it is not appropriately
> > > limiting voltage (it's purpose)?
> > >
> > > Regards,
> > >
> > > Jim Jablonski
> > > Royal Oak, Michigan
> > > '64 Fury
> > >
> > >
> > > Sean Bolter wrote:
> > > >
> > > > The heater selector switch on my 1964, non-A/C Fury has severe 
> > melting
> > > > problems.  When I bought the car, it worked fine, as did the blower. 
> > > > It
> > > >
> > > >
> > > >
> > > > has since had the buttons freeze up, and the blower stopped working. 
> > > > I
> > > > removed the blower and hotwired it, and it works fine out of the car.
> > > > Anthony Powell is rebuilding the switch, and he says the melting is
> > > > pretty bad.  Any ideas?
> > > >
> > > > I don't know if it is related, but one of the terminals going to my
> > > > ballast resistor is a little melted.
> > > >
> > > > Thanks,
> > > >
> > > > Sean Bolter
>
>
>
> bNUHLg.dGR1cm9z
>
>
>
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> ----
> Please address private mail -- mail of interest to only one person -- 
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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:
http://www.1962to1965mopar.ornocar.org/mletiq.html. 


bOyW3N.