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

rear defroster?

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Old Jan 3, 2003 | 08:38 AM
  #1  
rsscoty's Avatar
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Joined: Dec 2002
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From: Bentonville, Ar
Car: 1991 RS
Engine: 305 TBI
Transmission: auto
rear defroster?

Just wondering if the rear defrostyer not working is common, and yes I have checked the fuses. Not much on electronics could sure use some help.
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Old Jan 7, 2003 | 07:10 PM
  #2  
Matto'85TA's Avatar
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From: Eastpointe, MI
Car: 2001 Trans Am WS.6, 1985 Trans Am-RIP :,(
Engine: LS1, 305 TPI
Transmission: 4L60E, 700R-4
I think there is a relay in the dash that is connected to the defroster. Check that out. Also, if you have a volt guage on your dash see if the needle moves when you turn the defroster on. The defroster sucks a huge charge and the needle will noticebly move. If it moves the defroster is on, so I'd check the connections and wires near the hatch struts. If it don't move than you ain't got no power there, so I'd suspect a faulty relay, switch, or wire somewhere. Any other electrical problems?

Hope this helps some.

Matt
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Old Jan 10, 2003 | 11:33 PM
  #3  
TransAmTBI's Avatar
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Joined: Jan 2003
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From: NJ
Car: 1988 Trans Am
Engine: 305 TBI
Transmission: th700R4
my rear defroster doesnt work but i'm missing a wire to the other side of the hatch strut.. my biddy told me to simply ground the other side but i havent tried it yet
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Old Jan 11, 2003 | 11:56 AM
  #4  
MdFormula350's Avatar
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From: Maryland; USA
https://www.thirdgen.org/techbb2/sea...der=descending

i ran a search alot of information to look at..

could be not making connection in the rear, a broken line, a bad relay, or even a bad switch..
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Old Jan 11, 2003 | 12:16 PM
  #5  
HamSpiced's Avatar
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Joined: Nov 2002
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From: Detroit
Car: 89 Camaro I-Roc z
Engine: 305
Transmission: Th700r4
if u press the button and hold it does the light on the button stay on and then go away as soon as you remove pressure?? if so its the switch relay...
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Old Jan 12, 2003 | 09:34 AM
  #6  
rsscoty's Avatar
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Joined: Dec 2002
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From: Bentonville, Ar
Car: 1991 RS
Engine: 305 TBI
Transmission: auto
I believe thwt it is the switch. The light on the switch doesn't come on nor does the volt meter register when I turn it on. It just been too stinkin cold for me to want to mess with it here lately.
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Old Jan 12, 2003 | 09:48 PM
  #7  
TransAmTBI's Avatar
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From: NJ
Car: 1988 Trans Am
Engine: 305 TBI
Transmission: th700R4
my switch light comes on but they simply dont work for me
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Old Jan 12, 2003 | 11:22 PM
  #8  
HamSpiced's Avatar
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From: Detroit
Car: 89 Camaro I-Roc z
Engine: 305
Transmission: Th700r4
you may need to replace the switch its rather simple pull and replace 5 min job.
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