[DeTomaso] Speedometer Lights and A/C electrics

[Stephen]

OMG - you mean I screwed the pooch by removing all those cheap and cheesy blue snap together connectors and all the extra wires for the stereo and power antenna and driving lights and god only knows what else?  OMG!!!!  Tell me it isn't so!  And heck fire, if that isn't bad enough - I rewired the entire engine compartment!!!  Talk about extra wires!  Gotta love that nichrome they threw in at the factory.  But, well, the new MSD fuel injection fired up first try - so perhaps all is not lost.  At least the poor little thing starts instantly when the key is turned!



Stephen Nelson - who loves retirement!


-----Original Message-----
From: DeTomaso [mailto:detomaso-bounces at poca.com] On Behalf Of audionut at hushmail.com
Sent: Thursday, December 18, 2014 1:25 PM
To: detomaso at poca.com
Subject: Re: [DeTomaso] Speedometer Lights and A/C electrics

Forgive me, good sir, but here is my advice to any and all Pantera owners, especially one writing a blog entitled "finding happiness in
retirement":
Do Not Monkey With Anything Electrical On Your Pantera Unless Dire Circumstances Make This Absolutely Necessary.
An OCD-type approach to dash lamp re-wiring does not constitute dire circumstances.
If you find yourself unable to resist doing this job, make sure your next immediate purchase is a small fire extinguisher.
(tongue firmly in cheek)  = ]
 Sent using Hushmail
On December 18, 2014 at 7:13 AM, "Stephen"  wrote: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
  SNClocks.com

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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   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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