power window switch 1988

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jblueridge

SILVER Star
Joined
Aug 12, 2014
Threads
275
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3,360
Location
Near Charlottesville, VA
We had a warmish day last week and I tried to put the dog's window down. Nothing happened.
Investigation found this. Lock switch was gone.
switch gone.webp

I took off the door card and prised the plastic box apart. As usual, half the innards fell out.
Here's what's in there.
1771288475123.webp

Another angle, blurry, with 2 of the 5 contacts.
1771288549517.webp


The FSM shows a schematic of the wiring in the box but the reality is more complex..
I used an ohmeter to figure out connections.
1771288653247.webp


I did not take enough pics (as usual) but it is important to know...
You have to get the brass contacts to snap into the square copper "sockets" labelled L, GL and RL in the photo above.
They should be loose enough to move like a see-saw but tight enough so you can turn that part upside down and fit it to the other half with the black plastic rockers.

I found a brass strip and soldered it across the contacts the Lock switch used to connect. Now I can lower the dog's window without reaching.
I mesured and will 3d print a rubber-like TPU plug for the rectangular hole.
1771288926826.webp
 
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