M/T Neutral Safety Switch hook up

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=72193
Printed Date: July 07, 2025 at 11:04 PM

Topic: M/T Neutral Safety Switch hook up

Posted By: nccentral
Subject: M/T Neutral Safety Switch hook up
Date Posted: February 04, 2006 at 7:29 PM

I am installing a add-on remote start, to an existing Viper security system, on a 2002 nissan sentra. It is a manual transmission but it has a neutral safety switch, which shows 5v when in any other gear but neutral and is grounded when in neutral. My add-on R/S system has a (-) neutral safey switch input that needs to see ground in order to work.

My question is, can i connect those wires directly togeth or do i need to use a relay in someway? Also, if i need to use a relay how would i go about hooking that up?

Thanks

Replies:

Posted By: Powermyster
Date Posted: February 04, 2006 at 7:46 PM

you should be able to tap straight into it. judging by the info that you supplied its straight forward tap in

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Why oh Why didn't i take the blue pill
Darren Power

Posted By: Powermyster
Date Posted: February 04, 2006 at 7:47 PM

you should be able to tap straight into it. judging by the info that you supplied its straight forward tap in

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Why oh Why didn't i take the blue pill
Darren Power

Posted By: dualsport
Date Posted: February 05, 2006 at 11:28 PM

If you can, you might want to do a bench test first and make sure that the R/S disengages when it sees 5V applied-

If it normally expects a 12V swing on the input from open/closed to ground, there may be a chance 5V could be seen as a low. If you can, try even going to 4V or lower to see where the threshold is, to make sure you have enough of a safety margin.

Posted By: JWorm
Date Posted: February 06, 2006 at 1:13 AM

I did a manual Altima recently. The neutral wire works fine on the BLACK/ white neutral safety input of the 791xv.

To confirm:
After its remote started, and without putting the key in try pushing in the clutch and put the car in gear. As soon as you enter a gear the car should shut off.