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diver2

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Since: Jan 05, 2004
Posts: 2



(Msg. 1) Posted: Sat Jan 08, 2005 10:41 pm
Post subject: 79 firebird guages?
Archived from groups: alt>autos>pontiac (more info?)
I have a 79 Firebird w/o factory guages. I'd like to buy a factory guage
cluster and install it. What is involved? Thanks, David

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Joe36

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Since: Apr 03, 2004
Posts: 498



(Msg. 2) Posted: Sun Jan 09, 2005 12:26 am
Post subject: Re: 79 firebird guages? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
The two dash wiring harnesses were different. That's kind of obvious, since
the gas gage on a Trans Am isn't in the main cluster where your gas gage is.
But the cluster itself has all the circuits different compared to yours. So
you could either swap your dash wiring harness or just cut and paste all the
items you need. The swap of the gage cluster is extremely easy. You'd need:

1. T/A or Firebird Rally gages including side volt/gas cluster
2. Trans Am or Firebird w/gages Dash face plate (the woodgrain part)
3. Trans Am or Firebird I.P. wiring harness from a car with rally gages
4. Tach wiring harness (you can make this)
5. Oil Pressure Sender for gages
6. Water temperature sender for gages

75-79 harnesses are very compatible, but because of the relocation of the
dimmer switch in 79, followed by a total harness overhaul in 80, the 79 is
technically a one-year-only harness. The 70-79 gages will "look right" in
your car, but only beginning in 74 did they have the two idiot lights in the
speedo and the same basic circuit layout in the main cluster. The 160 mph
speedo in the 74 is very popular, and they can be pricy on ebay.

"D&LBusch" <diver.RemoveThis@frontiernet.net> wrote in message
news:S31Ed.3099$Cp7.1107@news01.roc.ny...
 >I have a 79 Firebird w/o factory guages. I'd like to buy a factory guage
 >cluster and install it. What is involved? Thanks, David
 ><!-- ~MESSAGE_AFTER~ -->

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Dennis Smith

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Since: Dec 27, 2003
Posts: 143



(Msg. 3) Posted: Sun Jan 09, 2005 8:40 pm
Post subject: Re: 79 firebird guages? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
In article <Ro2Ed.4255$754.3178@fe04.lga>, Joe.RemoveThis@dontspam.net says...

 >The 70-79 gages will "look right" in your car, but only beginning in 74 did
 >they have the two idiot lights in the speedo and the same basic circuit layout
 >in the main cluster.

FYI, the two idiot light speedo came out in mid-1972 when the seat belt buzzer
warning system was added. 1974 has that nasty system that won't let you start
the car without buckling up. I have yet to find a 74 car with that system
still functional ...

The circuit boards for rally gauge are pretty much the same from mid 72-79.
70-71 are odd ball with two less contacts so the gauge housing is even
different. They also used one wire tach rather than two wire like 72-up.


--
_________________________________________________________________
Dennis Smith

-1971 Trans Am - 455 H.O. - M21 4speed - Cameo white/blue stripe-
< <a style='text-decoration: underline;' href="http://ps2page.tripod.com/my71ta/tapage.html" target="_blank">http://ps2page.tripod.com/my71ta/tapage.html</a> >
-1973 Trans Am - 455 - TH400 auto - Buccaneer red-
-1984 Trans Am - 5.0 L - TH700R4 auto - Royal blue/silver aero-
_________________________________________________________________<!-- ~MESSAGE_AFTER~ -->
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diver3

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Since: Jan 10, 2005
Posts: 2



(Msg. 4) Posted: Mon Jan 10, 2005 6:32 am
Post subject: Re: 79 firebird guages? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
how tough is the wiring issue? Thanks. David
"Joe" <Joe.RemoveThis@dontspam.net> wrote in message
news:Ro2Ed.4255$754.3178@fe04.lga...
 > The two dash wiring harnesses were different. That's kind of obvious,
 > since the gas gage on a Trans Am isn't in the main cluster where your gas
 > gage is. But the cluster itself has all the circuits different compared to
 > yours. So you could either swap your dash wiring harness or just cut and
 > paste all the items you need. The swap of the gage cluster is extremely
 > easy. You'd need:
 >
 > 1. T/A or Firebird Rally gages including side volt/gas cluster
 > 2. Trans Am or Firebird w/gages Dash face plate (the woodgrain part)
 > 3. Trans Am or Firebird I.P. wiring harness from a car with rally gages
 > 4. Tach wiring harness (you can make this)
 > 5. Oil Pressure Sender for gages
 > 6. Water temperature sender for gages
 >
 > 75-79 harnesses are very compatible, but because of the relocation of the
 > dimmer switch in 79, followed by a total harness overhaul in 80, the 79 is
 > technically a one-year-only harness. The 70-79 gages will "look right" in
 > your car, but only beginning in 74 did they have the two idiot lights in
 > the speedo and the same basic circuit layout in the main cluster. The 160
 > mph speedo in the 74 is very popular, and they can be pricy on ebay.
 >
 > "D&LBusch" <diver.RemoveThis@frontiernet.net> wrote in message
 > news:S31Ed.3099$Cp7.1107@news01.roc.ny...
  >>I have a 79 Firebird w/o factory guages. I'd like to buy a factory guage
  >>cluster and install it. What is involved? Thanks, David
  >>
 >
 ><!-- ~MESSAGE_AFTER~ -->
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Joe36

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Since: Apr 03, 2004
Posts: 498



(Msg. 5) Posted: Mon Jan 10, 2005 5:25 pm
Post subject: Re: 79 firebird guages? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Not at all. What we're talking about is cutting every single wire off your
current main cluster plug, and then putting the rally gages plugs on. You'd
have to splice every wire back. It's about 10 wires I guess. It's really
easy, though, if you've ever spliced a wire.

"buschky" <diver.DeleteThis@frontiernet.net> wrote in message
news:lroEd.3239$Qu1.2358@news01.roc.ny...
 > how tough is the wiring issue? Thanks. David
 > "Joe" <Joe.DeleteThis@dontspam.net> wrote in message
 > news:Ro2Ed.4255$754.3178@fe04.lga...
  >> The two dash wiring harnesses were different. That's kind of obvious,
  >> since the gas gage on a Trans Am isn't in the main cluster where your gas
  >> gage is. But the cluster itself has all the circuits different compared
  >> to yours. So you could either swap your dash wiring harness or just cut
  >> and paste all the items you need. The swap of the gage cluster is
  >> extremely easy. You'd need:
  >>
  >> 1. T/A or Firebird Rally gages including side volt/gas cluster
  >> 2. Trans Am or Firebird w/gages Dash face plate (the woodgrain part)
  >> 3. Trans Am or Firebird I.P. wiring harness from a car with rally gages
  >> 4. Tach wiring harness (you can make this)
  >> 5. Oil Pressure Sender for gages
  >> 6. Water temperature sender for gages
  >>
  >> 75-79 harnesses are very compatible, but because of the relocation of the
  >> dimmer switch in 79, followed by a total harness overhaul in 80, the 79
  >> is technically a one-year-only harness. The 70-79 gages will "look right"
  >> in your car, but only beginning in 74 did they have the two idiot lights
  >> in the speedo and the same basic circuit layout in the main cluster. The
  >> 160 mph speedo in the 74 is very popular, and they can be pricy on ebay.
  >>
  >> "D&LBusch" <diver.DeleteThis@frontiernet.net> wrote in message
  >> news:S31Ed.3099$Cp7.1107@news01.roc.ny...
   >>>I have a 79 Firebird w/o factory guages. I'd like to buy a factory guage
   >>>cluster and install it. What is involved? Thanks, David
   >>>
  >>
  >>
 >
 ><!-- ~MESSAGE_AFTER~ -->
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