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Right turn signal on, gauges get strange...

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Old Jun 12, 2012 | 11:59 AM
  #1  
Shepp84Z28's Avatar
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From: NH
Car: 1984 Z28, 2004 F-250
Engine: 305 in the Z28, 10-Cyl in the F250
Transmission: 5-Speed in the Z28, F2250=Auto
Right turn signal on, gauges get strange...

Hi,

Two issues:

1. Often when I turn my right turn signal on the RPM, Oil pressure, and Battery charge gauges all stop working and kind of pulse with the blinker

2. At night if I have the lights on and try to turn the dash lights up (so I can see the gauges at night) I get a similar behavior as #1 above, gauges start acting weird.

Any ideas?

Thank you,

Shepp
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Old Jun 12, 2012 | 12:18 PM
  #2  
84firebird1996's Avatar
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Joined: May 2012
Posts: 125
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From: SOUTH TEXAS
Car: 1991 Trans Am GTA
Engine: LT-1
Transmission: 700R4
Axle/Gears: 3.42
Re: Right turn signal on, gauges get strange...

Same here when i dim or brighten my dahs lights everything goes wack!
I recently pulled out my dash and reinstalle dit a while ago and now it does that
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Old Jun 12, 2012 | 12:19 PM
  #3  
84firebird1996's Avatar
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Joined: May 2012
Posts: 125
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From: SOUTH TEXAS
Car: 1991 Trans Am GTA
Engine: LT-1
Transmission: 700R4
Axle/Gears: 3.42
Re: Right turn signal on, gauges get strange...

I know if you remove headlight switch and all the little stuff the gauges wont work at all. at least in my car
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Old Jun 12, 2012 | 12:23 PM
  #4  
Shepp84Z28's Avatar
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Junior Member
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Joined: May 2012
Posts: 21
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From: NH
Car: 1984 Z28, 2004 F-250
Engine: 305 in the Z28, 10-Cyl in the F250
Transmission: 5-Speed in the Z28, F2250=Auto
Re: Right turn signal on, gauges get strange...

I don't believe this car has had it's dash pulled out, or the light switch/pull rod. It's all original.

Thanks,
Shepp
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Old Jun 12, 2012 | 06:53 PM
  #5  
84firebird1996's Avatar
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Joined: May 2012
Posts: 125
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From: SOUTH TEXAS
Car: 1991 Trans Am GTA
Engine: LT-1
Transmission: 700R4
Axle/Gears: 3.42
Re: Right turn signal on, gauges get strange...

Well just a while ago i couldn't figure why mine were jumping. But i found a solution. Under your dash where the codes scanner goes connected there a 10mm bolt with a black ground wire connected there. That is your gauges ground. I moved it to a better pot which is the dash support on the bottom left side. Its a 10mm bolt too. I made the ground longer and placed it there and now all my gauges work and no interference with my lights or dimmer.
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Old Jun 13, 2012 | 07:55 AM
  #6  
Shepp84Z28's Avatar
Thread Starter
Junior Member
iTrader: (5)
 
Joined: May 2012
Posts: 21
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From: NH
Car: 1984 Z28, 2004 F-250
Engine: 305 in the Z28, 10-Cyl in the F250
Transmission: 5-Speed in the Z28, F2250=Auto
Re: Right turn signal on, gauges get strange...

Very cool, I'll have to check this out over the weekend, thanks man!

Shepp
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Old Jun 13, 2012 | 02:47 PM
  #7  
84firebird1996's Avatar
Member
 
Joined: May 2012
Posts: 125
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From: SOUTH TEXAS
Car: 1991 Trans Am GTA
Engine: LT-1
Transmission: 700R4
Axle/Gears: 3.42
Re: Right turn signal on, gauges get strange...

No problem just let me know what you find out or if you run into problems ill be more than happy to post pics.
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Old Dec 29, 2014 | 04:16 AM
  #8  
firebird phoeni's Avatar
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Joined: Dec 2014
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Re: Right turn signal on, gauges get strange...

I gotta check the dash lights on my friends car. His dash lights don't light up. I need some advice on it any takers?
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Old Dec 29, 2014 | 06:47 AM
  #9  
UNCLE TOM's Avatar
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Joined: Dec 2006
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From: ms. gulf coast
Car: 91 R/S , 89 dodge p/u
Engine: L31 GM crate re-cammed , 318
Transmission: T-5 , 4 speed auto
Axle/Gears: 3.42 , ?
Re: Right turn signal on, gauges get strange...

my bad ...........please delete ................

Last edited by UNCLE TOM; Dec 30, 2014 at 07:03 AM.
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