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

Where's the flip up headlight relay?

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Old Nov 3, 2006 | 01:09 AM
  #1  
rik89gta's Avatar
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From: CHICAGO
Car: 89 FORMULA 350
Engine: 5.7 L98
Transmission: 700R4
Axle/Gears: 9 BOLT/ 3.27 GEARS
Where's the flip up headlight relay?

I am having a hard time tracing the green and gray wires from the flip up motor to its relay... Does anyone know exactly where it is? A pic or a part # would really help!!! Thanks!
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Old Nov 3, 2006 | 10:42 AM
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From: CHICAGO
Car: 89 FORMULA 350
Engine: 5.7 L98
Transmission: 700R4
Axle/Gears: 9 BOLT/ 3.27 GEARS
help, please!
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Old Nov 3, 2006 | 11:21 AM
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From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
I believe its on the firewall on the driver's side near the other relays, close to the windshield washer motor. Its a square with two large plugs on the top and bottom.
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Old Nov 3, 2006 | 11:45 AM
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From: Davisburg, MI
Car: 87 Evoluzione, 84 TransAm, 05 GTO
Engine: LT1, L98, LS2
Transmission: (2) T56 & (1) 700R4
Axle/Gears: Moser 12-bolt w/3.73 & Stock
What he said, but its about 3.5" square and a half inch thick. Not a little one inch cube like normal relays.
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Old Nov 3, 2006 | 02:55 PM
  #5  
rik89gta's Avatar
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From: CHICAGO
Car: 89 FORMULA 350
Engine: 5.7 L98
Transmission: 700R4
Axle/Gears: 9 BOLT/ 3.27 GEARS
Thanks guys, i found it! But Is the module the big black box unit"with the two plugs in it" that probablly needs to be replaced? I pulled one of the plug adapters out with the 2 green and 2 gray wires and nothing looks out of the ordinary...
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Old Nov 3, 2006 | 04:30 PM
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Car: '91 Z28 convertible
Engine: TPI
Transmission: T5
Axle/Gears: 3.27 posi disc
Check the voltage to the relay module. Seems to be a coomon issue, could be a broken wire somewhere.

You can find all the diugrams you need in the 3rd-gen wiring diagrams section on ATGO.

Hope this helps.
Lou
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Old Nov 4, 2006 | 04:05 PM
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From: CHICAGO
Car: 89 FORMULA 350
Engine: 5.7 L98
Transmission: 700R4
Axle/Gears: 9 BOLT/ 3.27 GEARS
Thanks for the diagram link Lou...
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Old Nov 16, 2006 | 07:43 AM
  #8  
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From: williamsburg va
Car: 1987 firebird
Engine: 2.8L v6
Transmission: auto
It sounds like you and i have a similar problem. I checked the voltage on mine and found a connector that was bad and had to jerry-rig a connector. The connector was about 2.5-3 feet down the wire from the headlamp assembly. You have to take the whole assembly aprt to get to it, but i hear that is the most common part that goes bad on them. You might want to give it a look.
Hope this helped
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Old Nov 16, 2006 | 01:02 PM
  #9  
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From: CHICAGO
Car: 89 FORMULA 350
Engine: 5.7 L98
Transmission: 700R4
Axle/Gears: 9 BOLT/ 3.27 GEARS
Well, I ordered the new relay module from TDS and everything works as good as new! For now... Thanks for the help guys
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