528t to a window module

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=68175
Printed Date: May 15, 2025 at 5:22 AM

Topic: 528t to a window module

Posted By: coppellstereo
Subject: 528t to a window module
Date Posted: December 11, 2005 at 10:25 PM

I received the following advice on hooking my 528t to a window module.

30 - to window module trigger
87 - to ground
87a - (not used)

All the window module needs is a 500mA signal for it to activate (must be continuous - hence the use of the timer)

Why would I send the module ground (30 and 87) when the 528 timer is activated?

shouldnt I be sending the window module some sort of + signal?

I'm confused, thanks for your help!

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Replies:

Posted By: coppellstereo
Date Posted: December 12, 2005 at 12:36 PM

can anyone give a brief explanation?

Thanks!

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Posted By: JWorm
Date Posted: December 12, 2005 at 2:41 PM

The 530T requires a (-) activation signal. Does your alarm not have a Ground When Armed wire? If it doesn't, what are you planning to use to trigger the 528T? If it does have a GWA wire, you don't need the 528T.

Posted By: coppellstereo
Date Posted: December 12, 2005 at 6:23 PM

It receives activation from a pulse generated when locking the door. (factory remote entry)

I found the right wire to do this. Apparently the window module needs a steady pulse to roll down the windows. Do most window modules only need activation and then they begin to roll the windows up even though the signal goes away?

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Posted By: cntrylvr79
Date Posted: December 12, 2005 at 8:52 PM

What window controller are you using first? and as for wiring of the pulse timer, is the trigger wire that you want to use creating a - or + pulse?

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Cause I'm So white and nerdy...
First Class Certi-fried installer

Posted By: coppellstereo
Date Posted: December 12, 2005 at 9:12 PM

I believe it is giving a + signal. But when i lock the doors the pulse timer clicks, so i assume that it is working.

The window module is kinda a no-name brand. How should i set it up so that i can bench test it?

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Posted By: cntrylvr79
Date Posted: December 12, 2005 at 9:35 PM

coppellstereo wrote:

I believe it is giving a + signal. But when i lock the doors the pulse timer clicks, so i assume that it is working.
The window module is kinda a no-name brand. How should i set it up so that i can bench test it?

Should be able to hook up power and ground to their respective wires and then take the activation wires touch them to what they need to see to activate then meter the output wires for proper voltages. It may not work since some window controllers need to see some form of current draw to work. I've tried bench testing DEI's 530t without success. Best way to test is going to be hook up the output lines in the car. Then once those are in give it power and ground and same as before just touch the activation wires to whatever they need to see. Hope it helps good luck.

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Cause I'm So white and nerdy...
First Class Certi-fried installer

Posted By: coppellstereo
Date Posted: December 12, 2005 at 10:58 PM

i will try it soon. I still cant quite figure out the proper way to connect the timer though, did my schematic sound correct?

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