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Rear window defrost

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Old Mar 5, 2025 | 11:17 AM
  #1  
thelegend0210's Avatar
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Joined: Feb 2025
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From: Edmonton, AB
Car: 1991 Pontiac Firebird Trans Am GTA
Engine: 5.7 350
Rear window defrost

Searched the forums and can't find much about rear window defrost repair. Most of the wires on my 91 GTA don't heat up, only 3 right at the very top of the window. What, if any, are my options? Is it repairable or do I need to price out a new rear window?
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Old Mar 5, 2025 | 12:46 PM
  #2  
Komet's Avatar
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From: WA
Car: 1989 IROC-Z
Engine: L98 350 TPI
Transmission: 700R4
Axle/Gears: BW 9 Bolt / 2.77 Posi
Re: Rear window defrost

What's happening is there's a break in each line that isn't heating up in one or more places. There's special conductive paint you can buy to reconnect the lines, then it should work since it already partially works you know you've got power to it.
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Old Mar 5, 2025 | 01:47 PM
  #3  
thelegend0210's Avatar
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Junior Member
 
Joined: Feb 2025
Posts: 21
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From: Edmonton, AB
Car: 1991 Pontiac Firebird Trans Am GTA
Engine: 5.7 350
Re: Rear window defrost

Originally Posted by Komet
What's happening is there's a break in each line that isn't heating up in one or more places. There's special conductive paint you can buy to reconnect the lines, then it should work since it already partially works you know you've got power to it.
I don't know how I never knew that this existed. Thank you!
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Old Mar 6, 2025 | 06:58 AM
  #4  
BBCSwap's Avatar
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From: Central Michigan
Engine: SBC Dart 400 Holley 750 Carb
Transmission: 700R4
Axle/Gears: 28 spline 323 gears
Re: Rear window defrost

If I remember correct this is what I used and it works.

https://www.ebay.com/itm/142931813588
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