Universal Bypass

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=39606
Printed Date: July 21, 2025 at 10:04 AM

Topic: Universal Bypass

Posted By: davedyer79
Subject: Universal Bypass
Date Posted: September 23, 2004 at 9:27 AM

When using a universal bypass, what prevents the vehicle from reading two codes, the one in the bypass and the one in the ignition? I am putting a RS/alarm on my Titan this weekend and was just wondering about that. I have put in many RS's, but have been lucky enough to have vehicle specific bypasses. Is there anything different I should do in the installation. Thanks, David Dyer

-------------
davedyer79

Replies:

Posted By: mo12v
Date Posted: September 23, 2004 at 9:47 AM

Usually has relay, diode, transistor or data when ignition is turned on or RS is on
Kinda like your computer

-------------
MO

Don't Learn from Others Mistakes
You Might Be the One That Knows.

Posted By: davedyer79
Date Posted: September 23, 2004 at 10:33 AM

So all this should come pre-wired with the universal bypass, no need for any extra wiring from me?

-------------
davedyer79

Posted By: mo12v
Date Posted: September 23, 2004 at 10:39 AM

Just to wire RS to ByPass to make it turn on
What vehicle R U putting RS on?

-------------
MO

Don't Learn from Others Mistakes
You Might Be the One That Knows.

Posted By: kgerry
Date Posted: September 23, 2004 at 12:57 PM

all the new DEI universal modules 556U ( which replaced the 555U ) have a key sense circuit to prevent this.....

-------------
Kevin Gerry
Certified Electronics Technician
MECP First Class Installer

Owner/Installer
Classic Car Audio
since 1979

Print Page | Close Window