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Join Date: Jul 2023
Location: Ohio
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baffled newbie - window switch problem non working windows

hello everyone
i am working on a 1984 911 carrera and as an affirmed newbie - i misconnected wires when changing the switch on the drivers side window. I believe they are correct now i checked them against a few posts here - however - in the process of reconnecting incorrectly - the window went down and has not worked since - as a matter of fact - at this point none of the window switches work - i did put a new relay in just in case that was the issue - but no luck - i have since found out these are more sensitive to this mistake than i thought - I hope I have not completely messed something up -

I am hoping one of the genius minds on the forum might be able to steer me in the right direction to solve this issue- please...

any help would be greatly appreciated

thanks
Sean

Old 07-25-2025, 12:57 PM
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Fuse?
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Old 07-26-2025, 02:37 AM
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Once one of our geniuses gets you straightened out and the wires are connected properly - a suggestion.

Make a drawing /diagram of the switch wire locations on the switches for all 3 switches. Assuming that you have a Bentley shop manual, the switch replacement section is a good place. Considering switch quality, you will very likely be doing this repair again. It makes life a lot easier.

Same recommendation if and when the gauges are out.
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Old 07-26-2025, 05:12 AM
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Sounds like a wiring issue, I would first double check your work. Check out this post for correct wire locations.

Always a good idea to clean your fuse contacts to.

https://forums.pelicanparts.com/porsche-911-technical-forum/288567-power-window-switch-schematic.html
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Old 07-26-2025, 05:37 AM
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thanks everyone - really really appreciate it - i am off to my to do list - 911 to- do list that is!
Old 07-26-2025, 07:19 AM
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Quote:
Originally Posted by Mike Andrew View Post
Once one of our geniuses gets you straightened out and the wires are connected properly - a suggestion.

Make a drawing /diagram of the switch wire locations on the switches for all 3 switches. Assuming that you have a Bentley shop manual, the switch replacement section is a good place. Considering switch quality, you will very likely be doing this repair again. It makes life a lot easier.

Same recommendation if and when the gauges are out.
definitely will do - not sure what happened that day - i usually take a picture to have a record - could have deleted it by mistake - but will definitely heed the advice and draw everything out
Old 07-26-2025, 08:06 AM
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Quote:
Originally Posted by walt View Post
Sounds like a wiring issue, I would first double check your work. Check out this post for correct wire locations.

Always a good idea to clean your fuse contacts to.

https://forums.pelicanparts.com/porsche-911-technical-forum/288567-power-window-switch-schematic.html
thanks - this is what i used to put it back together when things got sideways - wish my brain was working that day and double checked everything first...
Old 07-26-2025, 08:08 AM
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i am checking my supplies for fuses - i thought i had some from a past project - will definitely clean leads when i get in there

thanks
Old 07-26-2025, 08:09 AM
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got it relay was different in diagram than what was actually on the car i want to give a huge shout out to Russ at European Auto Craft Studios in Florida - someone had posted a video of his discussing the switches and how they are wired - he went back and forth with me for 2.5 hours emailing what to check how to check amazing patience - thanks to everyone here that lent suggestions they are all greatly appreciated -- reminds me how much I have to learn - worked on a 924 years ago - not all the same but simiiarites -

thanks again everyone!! have a great weekend!

Old 07-26-2025, 04:25 PM
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