[DeTomaso] Speedometer Lights and A/C electrics

[Stephen]

Once again - thanks guys for the quick response.  It sounds like perhaps on
the early cars the "Fan" light might have been tied to the radiator fans.
Not a bad idea.  But, in looking at wiring diagrams it is apparent that the
a/c compressor can be turned on without having the heater fan running.
Seems sort of odd.  Two thoughts - one is to add a light to the speedo so
the unused idiot light tells when the compressor clutch is energized, the
second is to change wiring a bit so that the a/c clutch can only be
energized when the heater fan is turned on.  I am assuming others have
already done this.  I was thinking I might add a relay to help protect the
fan switch, but it is already coping with the fan motor - a lot bigger draw
than the two relays for the a/c fan and the radiator fan that comes on with
the clutch.

 

 

 

Stephen Nelson

 

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From: SOBill at aol.com [mailto:SOBill at aol.com] 
Sent: Wednesday, December 17, 2014 10:55 PM
To: steve at snclocks.com; detomaso at poca.com
Subject: Re: [DeTomaso] Speedometer Lights

 

On my '74 (#6338) the speedo lamps are labeled (left to right): Fan, Heater,
Gen

 

The Fan position has no connection and is unused.

The Heater position indicates the Heater/AC Blower Motor is ON.

The Gen position lights when the alternator is not charging the battery.

 

The main thing is to keep the main thing the main thing.
Do the best you can with what your have where you are.
Have fun today!
SOBill

 

In a message dated 12/17/2014 7:34:41 P.M. Pacific Standard Time,
steve at snclocks.com <mailto:steve at snclocks.com>  writes:

I was working under the dash of 5332, comfortably laid out with my feet on
the firewall, and noted there are three lights to the bottom of the
speedometer dial.  They are labeled Heater, Fan and Gen on the dial.  I have
lights in the Gen and the Fan holes, and they work.  Is there supposed to be
an additional light in the Heater hole - looking at wiring diagrams I get
the idea that the heater light is pretty much the same as the fan light.

Stephen Nelson



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-------------- next part --------------
   Once again - thanks guys for the quick response.  It sounds like
   perhaps on the early cars the "Fan" light might have been tied to the
   radiator fans.  Not a bad idea.  But, in looking at wiring diagrams it
   is apparent that the a/c compressor can be turned on without having the
   heater fan running.   Seems sort of odd.  Two thoughts - one is to add
   a light to the speedo so the unused idiot light tells when the
   compressor clutch is energized, the second is to change wiring a bit so
   that the a/c clutch can only be energized when the heater fan is turned
   on.  I am assuming others have already done this.  I was thinking I
   might add a relay to help protect the fan switch, but it is already
   coping with the fan motor - a lot bigger draw than the two relays for
   the a/c fan and the radiator fan that comes on with the clutch.




   Stephen Nelson


   [1]SNClocks.com

   Click here to join one of our mailing lists [2]Contact Lists

   Click here for our new [3]Hammered Dulcimers galleries

   Click here for [4]my new blog on finding happiness in retirement


   From: SOBill at aol.com [mailto:SOBill at aol.com]
   Sent: Wednesday, December 17, 2014 10:55 PM
   To: steve at snclocks.com; detomaso at poca.com
   Subject: Re: [DeTomaso] Speedometer Lights


   On my '74 (#6338) the speedo lamps are labeled (left to right): Fan,
   Heater, Gen


   The Fan position has no connection and is unused.

   The Heater position indicates the Heater/AC Blower Motor is ON.

   The Gen position lights when the alternator is not charging the
   battery.


   The main thing is to keep the main thing the main thing.
   Do the best you can with what your have where you are.
   Have fun today!
   SOBill


   In a message dated 12/17/2014 7:34:41 P.M. Pacific Standard Time,
   [5]steve at snclocks.com writes:

     I was working under the dash of 5332, comfortably laid out with my
     feet on
     the firewall, and noted there are three lights to the bottom of the
     speedometer dial.  They are labeled Heater, Fan and Gen on the
     dial.  I have
     lights in the Gen and the Fan holes, and they work.  Is there
     supposed to be
     an additional light in the Heater hole - looking at wiring diagrams
     I get
     the idea that the heater light is pretty much the same as the fan
     light.
     Stephen Nelson
     _______________________________________________
     Detomaso Forum Managed by POCA
     DeTomaso mailing list
     [6]DeTomaso at poca.com
     [7]http://poca.com/mailman/listinfo/detomaso_poca.com
     To manage your subscription (change email address, unsubscribe,
     etc.) use the links above.

References

   1. http://www.snclocks.com/
   2. http://fs19.formsite.com/kagforms/form675003155/index.html
   3. http://www.snclocks.com/TheRestofourWorld/Hammered-Dulcimers/About-Steves-Dulcimers/19824807_4sHGgj#1558377542_LKmkrT7
   4. http://www.perfectoldman.com/
   5. mailto:steve at snclocks.com
   6. mailto:DeTomaso at poca.com
   7. http://poca.com/mailman/listinfo/detomaso_poca.com