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Help With window switch.

Old 12-13-2015, 07:33 PM
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Jchiodi
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Default Help With window switch.

Let me preface this by saying I am horrible at electrical problems!

Since I've had car (4 years) I've had intermittent passenger window operation. Finally broke the old switch trying to fix it!

Got a new one and cannot figure out the wiring? I have found the two connectors, one yellow, for drivers side, green for passenger side. When i plugged in drivers side switch to the connector for the passenger side, it still controlled the drivers side window? Not sure what that means.

The new switch I've got has different color wires from OEM switch, and a different layout of pins on back of switch! I have connected the four wires different ways and I've blown 5 fuses so far! In the past the window motor has worked, now I'm not sure if it's shorted?

I do have a multimeter. Could I check if there is a short at the motor using the pins at the inside connector
Picture of the new switch attached... that's a blue wire, not green.

As I mentioned I am clinically handicapped on electrical crap... any help would be appreciated.
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Old 12-14-2015, 03:06 AM
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MainePorsche
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I've found this pic of the wires connected to a switch. Not the best, but it'll have to do to try to make the match between your new switch and the stock.

It appears that the Brown (stock) matches with the Grey (new) - this is the Ground line. Red matches with Red - this is the power feed. Green matches with Green, and Yellow (new) with Black wire (old).

So it looks like Grey (new) mates with Brown on the plug in car.
Red (new wire on switch) mates with Red/Black on plug in car.
The other two wires on your new plug Green and Yellow mate with the Grey/Blue and the Grey/Red on the plug in the car. These two are the feeds to the window motor. Not sure which one is up and/or down. They simply reverse the polarity at the motor. This you will have to find out. Try one way - if it is 'backwards' reverse them.

Now another issue. You say the layout of pins is different. Do you mean the connectors are not compatible and don't fit together ? if not there are two options for this: 1- (Recommended) get a compatible connector so you can detach if you need to service the switch again. 2 - Splice the wires together in quality fashion, but add extension wire length so you'll have enough room to service the switch if need be in the future. If your connectors are compatible the wires will likely be the Weathertec variety ends, and you can remove them from the connector and match them properly.

Sounds like on your initial test you plugged into the wrong connector.

Hope this helps.
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Last edited by MainePorsche; 12-14-2015 at 03:59 AM. Reason: syntax
Old 12-14-2015, 06:39 AM
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Steve Drake
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Default Switches for windows and sunroof must both reverse polarity?

The pictures of the back of the switches sure sorted out the connections. Good work!
If the switch function is to energize the motor with the polarity reversed for operation in one direction or the other, can a window switch be used for a sunroof switch?
My currect project is the sunroof which won't run in the open mode. It runs fine in the close mode so I gather the motor is OK.
I have the switch out and apart in case the contacts just need cleaning or alignment but ran out of time today. If something is broken and I need a new switch I Looked up the price of the sunroof and window switches and of course see the sunroof switch is about twice the price. I wonder if the tops of the switches are inter changeable. Would not be surprised.
Half the fun is fixing stuff for the lowest cost.
Steve

Old 12-14-2015, 09:40 AM
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Jchiodi
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I will try that combo and see what happens? The layout was on the back of the switch itself, not the plug end of switch. It just terminated in loose wires.

Hopefully this will work.
thanks
Old 12-14-2015, 10:03 AM
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Jchiodi
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No luck.. Still not working. I know that Red/blk is live with key switched on. Brown I know is ground.

Can I jump at this connector, the one that goes to the window motor? I would like to see if the problem is with the motor? think I need to connect 3 wires to get it going? As I said, I am horrible about these electrical problems..
Old 12-14-2015, 10:22 AM
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EuroSquirrel
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I too got a new switch with the different wires, which I didn't like. So went on eBay and got a good used switch with the proper plug. Red plug is left (driver side), green is right and yellow is sunroof. Except for the color, the sunroof switch has the same plug configuration. The 2 wire plug is rear wiper. The switch contacts basically wear out and aren't repairable. The new switch could be used, you just have to figure out which wire is power and which is ground in the car plug. The other two send power to the motor for up and the other way down. This is easily done my cutting off the old switch and trimming some insulation off. Now you can hook the plug back into the car plug and use your meter to find positive and so on. On 928's, the ground is usually brown and positive red.
Old 12-14-2015, 10:31 AM
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Appears we were both writing at the same time! Let me know if this info helps any...
Old 12-14-2015, 11:08 AM
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I did notice that the switch in your pic has a different part number then what I pulled out of the car?
mine is

928.613.123.01 / 03 8108 00
I've done a continuity test on the new switch.

1-No continuity 0- Continuity

Neutral UP DOWN
Red to yellow 1 1 0
Red to blue 1 0 1
Red to grey 1 1 1
Grey to yellow 0 0 1
Grey to blue 0 1 0
yellow to blue 0 1 1

If the old switch worked I could probably figure this out, but it's broken...
so 64 dollar question is what wire goes to what wire in the plug?
Old 12-14-2015, 11:50 AM
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MainePorsche
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Originally Posted by Jchiodi
I did notice that the switch in your pic has a different part number then what I pulled out of the car?
mine is

928.613.123.01 / 03 8108 00
I've done a continuity test on the new switch.

1-No continuity 0- Continuity

Neutral UP DOWN
Red to yellow 1 1 0
Red to blue 1 0 1
Red to grey 1 1 1
Grey to yellow 0 0 1
Grey to blue 0 1 0
yellow to blue 0 1 1

If the old switch worked I could probably figure this out, but it's broken...
so 64 dollar question is what wire goes to what wire in the plug?
Looks like the Yellow is for up, and the Blue (Green as I said) is for down.
What looks odd is the loss of continuity of Grey (Ground) on testing against the window feeds Yellow and Blue (note the reversal of the polarity/direction). Almost looks like you're not grounding when you would be switching the switch. Need Alan or one of the other Wise Ones here...
Old 12-14-2015, 11:53 AM
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MainePorsche
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Originally Posted by Steve Drake
The pictures of the back of the switches sure sorted out the connections. Good work!
If the switch function is to energize the motor with the polarity reversed for operation in one direction or the other, can a window switch be used for a sunroof switch?
My currect project is the sunroof which won't run in the open mode. It runs fine in the close mode so I gather the motor is OK.
I have the switch out and apart in case the contacts just need cleaning or alignment but ran out of time today. If something is broken and I need a new switch I Looked up the price of the sunroof and window switches and of course see the sunroof switch is about twice the price. I wonder if the tops of the switches are inter changeable. Would not be surprised.
Half the fun is fixing stuff for the lowest cost.
Steve

I wouldn't see why not from what I remember about dissecting them. Possibly the connector end is different, but that is not much to deal with.

See this too.

http://members.rennlist.com/v1uhoh/windowSW.htm
Old 12-14-2015, 12:05 PM
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I may take off door card to check the motor. I tried to jump at plug side and blew fuses. I may apply juice direct to motor and see what happens?

Damn I hate electrical problems.
Old 12-14-2015, 12:09 PM
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For whatever the reason, that ground from the car's female plug to the switch has to be connected for anything to work. Where the ground goes to I don't know, as there are only 2 wires to the motor in the door and for fun they are colored differently.
I doubt you can jump to the motor wires because of the lack of that ground being connected. I've spent hours on this trying to figure it out without having to replace several fuses.
Old 12-14-2015, 12:14 PM
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MainePorsche
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Originally Posted by Jchiodi
I may take off door card to check the motor. I tried to jump at plug side and blew fuses. I may apply juice direct to motor and see what happens?

Damn I hate electrical problems.
What year is your car ?
Makes a difference when looking at the Wiring Diagrams.

Have to go - on duty shortly.
If you don't have WSM's, can check here.

http://www.ligeti.com/928/
Old 12-14-2015, 03:54 PM
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86 and I also hate those wiring diagrams
Old 12-14-2015, 04:41 PM
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Funny, I just noticed someone said the yellow plug was for sunroof! I pulled that plug and used the drivers side window switch. AND wondered wtf was going on because the driver side window was still working!

Anyway, I've clipped the wires coming out of the switch side plug. Question is why two or three wires do I jump to get the window to move. Brown, Red, and either of the other two, Right? I will check this, and if I still get a blown fuse it should be the motor I'm guessing.

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