Author Topic: Rear Defogger Switch Repair  (Read 164 times)

76 Peach

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Rear Defogger Switch Repair
« on: October 05, 2019, 06:44:05 PM »
My rear defogger switch has a piece that is cracked. I was wondering if it was repairable since I cannot seem to find a like replacement for it. I think it is the first design for this switch.

Does anyone have any suggestions for where to take it/send it for repair?



1976 50th Anniversary LE

Maxthe222

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Re: Rear Defogger Switch Repair
« Reply #1 on: October 05, 2019, 07:07:11 PM »
I was about to say buy another second hand one, but man, you will not find another one with the lettering that that nice and not smudged or faded. Maybe ask a local auto sparky if they have anything they can use to repair and disassemble it?
1979 T/A Y84 WS6
1979 F/A W72 WS6
1971 Formula 400 4-Speed

Aus78Formula

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Re: Rear Defogger Switch Repair
« Reply #2 on: October 06, 2019, 07:59:57 PM »
It's the fan version.

76 Peach

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Re: Rear Defogger Switch Repair
« Reply #3 on: October 06, 2019, 09:27:55 PM »
I was about to say buy another second hand one, but man, you will not find another one with the lettering that that nice and not smudged or faded. Maybe ask a local auto sparky if they have anything they can use to repair and disassemble it?

Thanks - I think the only actual problem with the switch is the post that the spring (coil?) is on in the first pic. It's been awhile since It was used, but it was functioning to turn on the blower fan in the back.
1976 50th Anniversary LE

b_hill_86

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Re: Rear Defogger Switch Repair
« Reply #4 on: October 06, 2019, 09:44:22 PM »
There actually used to be a fan back there before the heated glass?
-Brian-

1977 Trans Am 400 4 speed

Re: Rear Defogger Switch Repair
« Reply #4 on: October 06, 2019, 09:44:22 PM »

Aus78Formula

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Re: Rear Defogger Switch Repair
« Reply #5 on: October 07, 2019, 02:00:40 AM »
Yes, note the switch has High and Low rather than On or Off. It's why the parcel tray has a few odd holes in it.

Here it is seen on a 71 TA with rare rear shoulder belts.

Seatbelt rare option shoulder harness1 71TA by Aus78Formula, on Flickr

https://www.firebirdcentral.com/1971_1979_Firebird_Rear_Window_Defog_Defroster_p/das-486a.htm
« Last Edit: October 07, 2019, 02:11:51 AM by Aus78Formula »

76 - 455 - 4

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Re: Rear Defogger Switch Repair
« Reply #6 on: October 07, 2019, 07:28:05 AM »
I've been looking for a good used one for my '76 for years. They are non-existent. If anyone finds a bag of new ones, I'd be interested.

b_hill_86

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Re: Rear Defogger Switch Repair
« Reply #7 on: October 07, 2019, 07:35:02 AM »
Never knew that. Thanks
-Brian-

1977 Trans Am 400 4 speed

76455sd

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Re: Rear Defogger Switch Repair
« Reply #8 on: October 07, 2019, 08:13:47 AM »
I recall that as a defogger the blower was pretty useless.  It just blew trunk air at the glass.  Back in the day we had that set up in a 72 Catalina.  It was better than nothing (but not much) in the NE winters.
Steve D
'76 LE 455/4speed/solid roof - SOLD
'02 WS6 T/A convertible

firebirdparts

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Re: Rear Defogger Switch Repair
« Reply #9 on: October 07, 2019, 10:59:58 AM »
I hate to start a dash fire here, but you could mount a resistor somewhere else to replace that one.  I guess it would be safer to remove that and make it so that it only works on high. 
I want to be like Paul Kenny when I grow up
Joe Bays
1977 Y82 4-speed (red interior)
1978 Skybird 350
1978 Redbird 305
1979 Redbird 301 4-speed
1992 Lincoln Mark VII LSC/SE (red)
1970 Datsun Pickup
1953 Chevy pickup (converted 4x4)
1988 T-bird Turbo Coupe

Re: Rear Defogger Switch Repair
« Reply #9 on: October 07, 2019, 10:59:58 AM »
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