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Creating A GWR output

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=141411
Printed Date: March 28, 2024 at 3:55 PM


Topic: Creating A GWR output

Posted By: prince504
Subject: Creating A GWR output
Date Posted: June 20, 2016 at 12:19 PM

I know.. "why doesn't your remote start have that?"

Well I am trying to install a Push-Button-Start in a vehicle w/ a standard key (it will replace the standard key). The device doesn't have GWR output, thus I wish to create one for the bypass.

The manufacturer of the device does offer a passive bypass (similar to the DEI 556U) but without a GWR input as it constantly deactivates the immobilizer via a induction wire wrap. But I don't wan to sacrifice a key if I don't need too.

Here is the bypass they offer --> https://amzn.to/28J906y








Replies:

Posted By: kreg357
Date Posted: July 15, 2016 at 5:55 AM
Can you post the devices wiring diagram? I don't know which Easystart PTS system you have.

Additionally, knowing what vehicle this will be installed in and what bypass module you plan to use
will help.

My initial thoughts :

The Easystart system must have a high current Ignition output. And it might have a second Ignition
output ( which might be programmable ). If it does have two Ignition outputs and your vehicle only
needs one Ignition, then you have a possible GWR supply. Two issues here. First, most bypass modules
are looking for a (-) GWR signal so a relay would be needed to convert the (+) Ignition signal over to
the (-) signal the bypass requires. The second issue is more subtle. In a normal R/S system, the GRW
signal actual precedes the Ignition Output by a second. Some vehicles need to see the transponder
signal before the Ignition comes on.

If the Easystart system only has one Ignition Output, you can use that signal to trigger two relays.
One will supply the high current (+) Ignition signal to the vehicle and the other relay will convert
the signal to (-) for use as GWR for the bypass module. These relays will keep things isolated.

-------------
Soldering is fun!




Posted By: prince504
Date Posted: July 15, 2016 at 7:09 AM
kreg357 wrote:

Can you post the devices wiring diagram? I don't know which Easystart PTS system you have.

Additionally, knowing what vehicle this will be installed in and what bypass module you plan to use
will help.

My initial thoughts :

The Easystart system must have a high current Ignition output. And it might have a second Ignition
output ( which might be programmable ). If it does have two Ignition outputs and your vehicle only
needs one Ignition, then you have a possible GWR supply. Two issues here. First, most bypass modules
are looking for a (-) GWR signal so a relay would be needed to convert the (+) Ignition signal over to
the (-) signal the bypass requires. The second issue is more subtle. In a normal R/S system, the GRW
signal actual precedes the Ignition Output by a second. Some vehicles need to see the transponder
signal before the Ignition comes on.

If the Easystart system only has one Ignition Output, you can use that signal to trigger two relays.
One will supply the high current (+) Ignition signal to the vehicle and the other relay will convert
the signal to (-) for use as GWR for the bypass module. These relays will keep things isolated.


Thnx for the response Kreg.

I actually gave up on the venture. I quickly learned after the upgrade that the Easystart system wouldn't work well with my current aftermarket remote start. I would have to go with either the Easystart or my remote start. And I chose the latter.





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