Dont know if my mind is fried or what, but I can't figure out how to do this. Window switches - I want to completely eliminate them and use custom momentary push buttons instead to open/close each window. The push buttons have the typical two prongs underneath.

Can anyone look at the wiring diagram I made below and help me figure out that last connection at the bottom? I know there are other relays I could use like double-circuit ones, but I'm trying to map this out in my mind with simple one-way relays. So don't over-analyze the drawing. It's just a general sketch.

Any help you guys can provide would be awesome. THANKS!

 

In your pic, you are feeding the relays with a power source from your mom switches -but those switches have no power source to them, so you'd need a power source.

But I'm lost as to how you think this is going to work - all you are doing in your pic is feeding in a very abstract way power to the existing window switch - which isn't going to do anything until someone pushes it.

There's got to be a way of 'telling' the window motor if it's to go up or down. I'm assuming that this is done factory by reversing the current through the motor, so that (as an example) Terminal A gets 12v+ and Terminal B gets ground for the window to go up, and then Terminal A gets ground and Terminal B gets 12v+ for the window to go down - but I don't know for sure.

You're still going to need a way of 'telling' the window motor which way to go, which means a 3rd swicth position no matter what you do.

I suppose what you are trying to attempt is a seperate momentary switch for up and down, so a total of 4 swicthes (2 left window and 2 right window). If so, what your going to want (assuming my theory about factory up/down is correct) is one momentary switch providing 12v+ to a grounded relay that in turn sends out a GROUND to that side of the window motor terminal when the relay is energized, and another momentary switch providing 12v+ to a grounded relay that in turn sends out a 12v+ to that side of the window motor.

But - if my theory is correct about the two terminals on the window motors, then you'll need another set of relays to swap the currents around before the window motor - mighty confusing. Going to take alot of relay wiring especially if sticking with STSP relays (and I understand why you want to, as the DTSP or STDP or DTDP relays confuse me too).

Why may I ask do you want to get away from the simple operation of normal 3 way window swicthes?

 

The window switch doesn't really work like that, there's no an "up" and "down" contact, it's just a pair of motor leads, and the switch reverses the polarity to run the motor in both directions.

You can do what you want with one DPDT relay, two push buttons, and a diode.

 

So my theory on the polarity being reversed was correct then - it was a guess

I get confused with DTDP relays - but I did do a quickie drawing showing how I think you'd wire it with STSP relays ...

Joef2002 - send me your email addy and I'll email you a pdf file showing my thought.

 

Trying to use only SPST relays makes the wiring a lots more complicated. You'd need about 4 NO relays to do the polarity reversal, and a fifth NC relay to preclude shorting the power to ground when you accidentally press both buttons.

 

Thx guys. figuring out Wiring isn't really my strong suit as u can see. I can DO it, but sometimes can't picture it. APER - is it possible to ask for a really basic sketch as to what your describing? How the hookup would look? Camaro - it's just a matter of personal preference. My switches are cracked, so I thought it would kinda cool to run the windows with custom push buttons. Thanks again!

 

I was thinking something along the lines of this:

 

 

Wow guys this is absolutely perfect. Thank u so much for sketching this out. Nina just one question - what is that circuit breaker wdo line? Is that the same as 12 v fused'power?

 

 

Yes, that's the "fused" power line.

Ninja's circuit also doesn't need pushbuttons capable of handling the full motor current, which can be substantial. A second relay could be cheaper than two high-current buttons, depending on how much current they need to pass.