Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

Headlights won't flip up but will go down..

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Old Sep 1, 2012 | 10:27 PM
  #1  
kain452004's Avatar
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Car: 1984 Firebird Trans Am
Engine: 5.0 V8
Headlights won't flip up but will go down..

On my 84 T/A, my headlights will not flip up when I turn the lights on but will flip down when turning them off.. The bulbs light up when on but just won't flip up.. No noise or anything but flip down like nothing is wrong.. I searched the forums a lil bit and couldn't seem to find anything.. Any help would be appreciated..
Side note, I have NOT checked the fuses or relays YET.. Plan to in the AM.. How would I know if my relays are gone?? Thanks!
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Old Sep 2, 2012 | 02:18 AM
  #2  
TreeFiddy's Avatar
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From: Sydney, Australia
Car: '86 TA
Engine: '74 350
Transmission: 700r4
Axle/Gears: 2.77
Re: Headlights won't flip up but will go down..

Get a helper, and feel the left and right door relays, and the isolation relay, to see if they click when the headlight switch is operated.

Bet the left and right relays are both not operating. If not, it's most likely the isolation relay or the power to it.
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Old Sep 2, 2012 | 06:53 AM
  #3  
85FBTranam's Avatar
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From: Ontario, Canada
Car: 1985 Pontiac Trans Am
Transmission: BW T5, Hurst Short Throw Shifter
Axle/Gears: 3.70 Posi
Re: Headlights won't flip up but will go down..

Sounds like the isolation relay. Passenger side on the rad support wall, behind the battery.
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Old Sep 2, 2012 | 07:02 AM
  #4  
TreeFiddy's Avatar
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Joined: Jun 2005
Posts: 1,380
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From: Sydney, Australia
Car: '86 TA
Engine: '74 350
Transmission: 700r4
Axle/Gears: 2.77
Re: Headlights won't flip up but will go down..

Yep sorry I worded my previous post ambiguously. I meant that the door relays won't be working, because the isolation relay that powers them has faulted.
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Old Sep 4, 2012 | 10:05 AM
  #5  
kain452004's Avatar
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Car: 1984 Firebird Trans Am
Engine: 5.0 V8
Re: Headlights won't flip up but will go down..

What part would I look for if, say, at Autozone?
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Old Sep 4, 2012 | 10:36 AM
  #6  
TTOP350's Avatar
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From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Headlights won't flip up but will go down..

This may or may not help also. I don't know much about the older lights.
http://www.top-downsolutions.com/Bod...-firebirdfiero
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