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Defroster switch...

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Old 11-08-2009, 09:42 AM
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Well, put the fuse in and it seems to be working fine. Timed it and it stayed on for exactly 10 minutes. I still don't understand why the circuit breaker doesn't work.... Is it essentially the same technology?
Old 11-08-2009, 10:09 AM
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You're right - there is no reason a new circuit breaker shouldn't work just as well as a fuse. As long as they both pass the required current without blowing, there should be no difference in operation. It is possible that the new circuit breaker you bought is defective.
Old 11-09-2009, 09:01 AM
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I'm wondering if the tint could conduct additional current through the defroster. The fuses look like they actually blow at a higher amperage (just over 40A for a 30A fuse) http://www.cooperbussmann.com/pdf/56...8673caf2e6.pdf than the breakers, which drop their trip point as the temperature increases. http://www.cooperbussmann.com/pdf/d6...f1cda0ad62.pdf

Either way, the fuses look to be more stout as they blow at higher power at higher temperatures.
Old 11-09-2009, 05:37 PM
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Originally Posted by wssix99
I'm wondering if the tint could conduct additional current through the defroster. The fuses look like they actually blow at a higher amperage (just over 40A for a 30A fuse) http://www.cooperbussmann.com/pdf/56...8673caf2e6.pdf than the breakers, which drop their trip point as the temperature increases. http://www.cooperbussmann.com/pdf/d6...f1cda0ad62.pdf

Either way, the fuses look to be more stout as they blow at higher power at higher temperatures.
Which leads me to believe that circuit breakers are safer in the sense that they keep things from frying while the fuse "lasts" longer, although dangerously...
Old 11-09-2009, 06:14 PM
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Glad I just saw this post, my defroster in the back has been acting screwy recently, randomly kicking off after only a min or two, and not turning back on. Now I know what to do about it
Old 11-14-2009, 02:40 PM
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Mine defroster work fine. But at Idle turn it on the amp gauge drops to a little less then 13 some times to 13. Turn it back off it goes back to normal I geuss. Some times going down the road my light dim and go back to normal.
Old 11-17-2009, 09:02 AM
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This is great info! I have been ignoring the same issue for a couple of years now! Thanks LS1tech!
Old 11-17-2009, 12:49 PM
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Originally Posted by j-man
This is great info! I have been ignoring the same issue for a couple of years now! Thanks LS1tech!
me too lol, i just thought thats how it worked.
Old 11-30-2009, 02:51 PM
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Default No light, but clicking?

Hey guys i have a question about this, i changed my 30 amp breaker for a fuse and when i click my defrost i hear it click but no light turns on and the rear window does not get hot? How could i fix this or what could it be? ive been reading and my only guess would be to actually change that little module in the HVAC or swap it off of a used or junked camaro? Its really bugging me!

All help is appreciated,
Thanks in advance, Pawel
Old 11-30-2009, 07:01 PM
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Anybody!?
Old 01-15-2010, 06:27 PM
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I did this same thing and had an issue with 30amp fuse to keep blowing, did it twice tonight when playing with the seat controls and the defogger.


???
Old 01-17-2010, 04:10 PM
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The 30 amp fuse should be enough for the defroster OR the seats but often not for both at the same time. If the fuse blows while using just one or the other then you have an electrical problem that needs to be tracked down (such as a short in the defroster grid).
Old 01-20-2010, 02:29 PM
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Changed back to the breaker... both work great, even together..wierd
Old 01-20-2010, 03:06 PM
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Just move to Texas and you won't have to use your defroster - LOL. I can't even tell you the last time I turned mine on, maybe 8-9 years ago.
Old 02-01-2010, 10:38 PM
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I have been annoyed by this for almost a year now and finally decided to check into it. I feel like an *** for waiting so long now lol.
Old 03-13-2010, 01:20 PM
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My defroster switch doesn't light up when I press the button but the power seat works as it should. Is there anything specific I should be looking at? If the switch is the culprit, I have to purchase the entire HVAC unit?

Last edited by GotGrunt; 03-13-2010 at 01:27 PM.
Old 03-13-2010, 04:19 PM
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Originally Posted by GotGrunt
My defroster switch doesn't light up when I press the button but the power seat works as it should. Is there anything specific I should be looking at? If the switch is the culprit, I have to purchase the entire HVAC unit?
I'd start with the circuit breaker. The defroster pulls more current than the seat.
Old 03-13-2010, 04:57 PM
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Originally Posted by wssix99
I'd start with the circuit breaker. The defroster pulls more current than the seat.
Where exactly is this circuit breaker located? I just picked up my Camaro and I'm new to LS1 cars. I don't have the owners manual with the fuse breakdown.
Old 03-14-2010, 07:22 AM
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The circuit breaker is in the fuse panel on the left end of the dash with the other fuses. It looks like a small silver box plugged into a fuse socket.
Old 03-14-2010, 10:07 AM
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Originally Posted by GotGrunt
Where exactly is this circuit breaker located? I just picked up my Camaro and I'm new to LS1 cars. I don't have the owners manual with the fuse breakdown.
You can get a new owners manual here: http://www.helminc.com Its a good $5-10 to spend.


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