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1972 GTS IVR part number |
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dreamzhappen 
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Joined: 21-May-2023 Location: Franklin, NC Status: Offline Points: 31 |
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 Topic: 1972 GTS IVR part numberPosted: 26-July-2025 at 7:50AM |
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Hello; I am ordering a new printed circuit board for my 1972 Gran Torino Sport. The printed circuit board does not come with the Instrument voltage regulator. When looking online I am getting mixed results for which IVR to buy. Does anyone know the correct IVR part number for my Torino? Any help would be greatly appreciated. This is a pic of my instrument cluster.
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72FordGTS
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GTS.org Admin Joined: 06-September-2005 Location: Ontario, Canada Status: Offline Points: 6780 |
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Posted: 28-July-2025 at 5:57AM |
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For the standard cluster it is: D1AZ 10804-A For the Rallye Cluster it is: C9AZ 10804-A This applies to all 1972-76 Torinos. |
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Vince
1972 Ford GTS Sportsroof - Survivor, One Family car GTS.org Admin |
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Rockatansky
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Joined: 30-July-2010 Location: On The Road Status: Offline Points: 6398 |
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Posted: 28-July-2025 at 3:33PM |
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are those PN's not in the Cluster & Gauges info thread? my recollection there are 2 IVR's, the terminals are opposite and mount different. different for 77-79's? maybe, the printed circuits and lower housing are different. leave it to Ford ....
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72 GT Ute
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dreamzhappen
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Posted: 29-July-2025 at 2:42AM |
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Thank you Vince! That was the one most places had listed so I ordered that one.
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dreamzhappen
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Posted: 29-July-2025 at 2:43AM |
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Looked all over the threads and could not find a part number for a 1972. Maybe I missed it, but I could only find for 1973 and up.
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hotrodg57
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Joined: 08-August-2025 Location: san diego Status: Offline Points: 7 |
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Posted: 08-August-2025 at 11:48AM |
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Guys, may I join in on this conversation? I purchased a 72 Ranchero Gt (with full gauges) Problem is gas gauge did not work. I have checked the sending unit (good) the gauge (good) so I replaced ivr. with the D1Az # Now, gauge works only when key is in Acc. mode, as soon as engine fires, the gauge goes off. So I checked the voltage at the gauge in Acc. mode (7volts) needs 6 . With key ignition on, voltage drops to (4 volts). Soooo then I see this post, and I realize I got the standard gauge part first time around, so I just installed new the C9AZ# and they don't work at all! This ivr is only putting out 5 and 4 volts!
Anybody have any Ideas? P.S. all other instruments work properly. HELP Rodger
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72 Ranchero GT 351C 4V
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72FordGTS
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Posted: 08-August-2025 at 6:42PM |
Maybe it's a defective repro IVR? What kind of shape is the printed circuit in?
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Vince
1972 Ford GTS Sportsroof - Survivor, One Family car GTS.org Admin |
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hotrodg57
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Posted: 09-August-2025 at 7:20AM |
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Vince, thanks for the reply. Printed circuit is brand new. This is the 2nd new ivr I tried. Both were repops. There is a NOS one on ebay right now, hmm??? I already have about 75 bucks invested in these things.
Do I dare try another one.???? Just for the record , the turn signals weren't working either. I put a new flasher in, still no go. I tore the switch apart, all was good.
 , so I bought another new flasher, and it worked! Can these new repop parts be trusted? |
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72 Ranchero GT 351C 4V
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hotrodg57
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Posted: 10-August-2025 at 7:29AM |
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I bit the bullet, and just bought brand new ivr #3. This one is NOS, so I'm hoping I'll have better luck than with the last 2 repops. I will chime in when I get it here and installed. Thanks Rodger
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72 Ranchero GT 351C 4V
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72FordGTS
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Posted: 11-August-2025 at 3:34PM |
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I am hoping that is your issue. Please let us know.
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Vince
1972 Ford GTS Sportsroof - Survivor, One Family car GTS.org Admin |
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hotrodg57
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Posted: 15-August-2025 at 12:39PM |
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Quick up-date, I just received the NOS part, I bench tested it, ant it actually works!
 I will get it installed tomorrow and hopefully my darn gas gauge will work.  I will let you know
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72 Ranchero GT 351C 4V
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hotrodg57
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Posted: 16-August-2025 at 8:06AM |
 It don't workJust installed new ivr#3, (it works on the bench, none of the others did), however once installed, nothing
 just like all the others. I give up! I'm buttoning this thing back together and it's going to be sold with no gas gage |
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72 Ranchero GT 351C 4V
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hotrodg57
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Posted: 25-August-2025 at 1:12PM |
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Ok guys, I apologize for my meltdown last week. I have calmed down.
I did finely get my gas gauge working! IRV #3 was the NOS part that actually worked. P/N C9AZ 10804A. I had to take a few days away.... Then went back and RE-TESTED my sending unit and now found it NOT working. Just put a new sending unit in, and what do ya know, everything works! Thanks for all the help and suggestions. Rodger
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72 Ranchero GT 351C 4V
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hotrodg57 wrote: