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Old 03-26-2005, 10:17 AM
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I'm stumped about electric windows. GRRRR!!

Ok you electicity fans, I need help! I installed Ford power window motors in my AD pickup and planned on using the ubiquitous GM chrome P/W switches. GM and Ford motors run the same; switch + & - to the two leads going to the motor and it changes direction. No external ground except at the master switch on the driver's door. Very easy to do with a DPDT switch which is what I assumed the classic GM was. I wired all 4 motors accordingly but when I tore into a spare switch just for jollies I found it is a SPDT! I know I can make them work using DPDT relays in the circuit at each door but it is driving me nuts trying to figure out how GM got them to work. Next step if you guys can't help is a trip to Pick-A-Part to back engineer their wiring harness!!

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Old 03-26-2005, 05:48 PM
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Cornfuzzed...

Doc here...

A Bit Cornfuzzed here...So let me ask this...does the switch have 6 poles on the back and does it move forward (up) and backward (down) and "Off" in the center?

If so wire it this way: Power & Ground to the forward (front two poles),(up ) direction of the switch,

Then wire in jumper's in an "X" pattern from there to the Rear (down) direction So power in the front left is now power in rear right, ground in the front right is ground in the rear left...

The window leads will go to the Center wiper, power & Ground wire to match the forward (up) direction of the switch...

This will reverse the motor at the Switch.

Let me see if I can draw it here with a keyboard..


Window switch
Power-----------------0 0---------Ground
Window Power---------0 0----------window ground
jumpered ground-------0 0-----------jumpered power

After all, What is a relay, but an automatic version of a Switch....

Clear as Mud right?

Hope that helps!
Doc

Let me know if the switch is different, you may have the wrong type switch, but probably not...

PS: if it's just 3 poles on the switch, GENERAL MYSTERY was using a relay as you said, N.C power on the relay and switch power on up, N.O and relay coil on down (to reverse power and ground to the motor from the relay) Go to the "HELP" tree at Kragens, They have the 6 pole switch for $19.95 a pop.
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Last edited by docvette; 03-26-2005 at 06:02 PM. Reason: Added PS
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Old 03-26-2005, 06:23 PM
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Thanx for the reply Doc. Unfortunately you are describing a DPDT switch which I was expecting these to be. Here is a photo of the outside and inside of mine. As you can see, they are SPDT which won't work w/ late (70s and up?) motors. I want to keep these switches 'cause they are real chrome on real metal whereas the ones you describe are vacuum chrome and plastic. Oh well, off to Southern Auto for 4 DPDT Bosch relays I guess!!
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Old 03-27-2005, 08:57 PM
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Lets see....

Doc here,

I found this,
http://www.a1electric.com/Merchant2/..._Code=SK7-OEGM

It dosn't Say if the Switches are Chrome/Metal or not, but does say OEM General Mystery...so I assume they might be.

If you drop them an email, Maybe they can supply you with a DPDT setup in the same package...When I saw the kit...I said Way KEWL....he could just get one of these...until I scrolled down and got a look at the sticker price!

Outrageous!
I think you can buy a complete Car Painless harness for like $100 less!

Let me know how goes the battle...

Doc
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Old 03-27-2005, 09:34 PM
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Thanx for the link. Yep those look like the DPDT version of my SPDT alright. But no way am I spending $200 for 4 on-off switches. Off to Pick-A-Part!!
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Old 03-28-2005, 01:51 PM
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DPDT/SPDT? Care to explain
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Old 03-28-2005, 02:33 PM
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Sorry about that. Those are terms used to describe the number of terminals in a relay. Below is a picture of 4 examples. 1 is a relay that is normally open - no current flow until the coil is energized which closes the circuit. 2 is the same relay as in 1 except the circuit is normally closed until the coil is actuated which opens it. 3 is the next step in progression of the basic circuit with two contacts, one open and one closed regardless of the coil charge. The last one is the same as 3 but it adds a second complete circuit so two completely different circuits can be controlled simultaneously.

In my situation above, I have type 1 window regulator switches whereas the motors I have need type 4. Bummer!!
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Old 04-04-2005, 10:52 PM
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Problem solved thanx to help from board member 5Window. See here.
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