Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

Need some help with a NSS

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Old Nov 26, 2001 | 01:02 PM
  #1  
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From: Northern NJ
Car: 89 Formula / 09 G8
Engine: LS1 / LS3
Transmission: M6 / M6
Axle/Gears: 3:42 / 3:27
Need some help with a NSS

I am having problems wiring up my alarm for the neutral saefty switch. The alarm needs a ground in order to start the car. I have ripped apart the shifter and still can't find a suitable wire. I then wired a relay up to the purple starter wire so that when the starter is engaged, the wire for the alarm is grounded. This works well in theory, but the alarm needs the ground before it even begins the starting process. Should i just get a micro switch so that only when the shifter is in the park position it starts? or is there a wire i am missing. I have gone through every wire in the connector at the shifter and none of them produce the ground i need!!!
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Old Nov 26, 2001 | 01:21 PM
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From: So.west IN
Car: 87 Formula/ 00 Xtreme
Engine: TPI 305/ v6
Transmission: struggling t-5/ 4l60E
Axle/Gears: 3.08/ 3.23
Anything metal & screwed to the body on the car is grounded. You're needing a switched ground ??

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Old Nov 26, 2001 | 03:24 PM
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From: Northern NJ
Car: 89 Formula / 09 G8
Engine: LS1 / LS3
Transmission: M6 / M6
Axle/Gears: 3:42 / 3:27
Yes, i need a ground that is switched only when the shifter is in park/neutral. If i just ground the wire, it can start when the car is in gear... bad.. very bad.
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Old Nov 26, 2001 | 04:20 PM
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Car: 92 Z, 91 Formula, 04 CTS, 01 Tahoe
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Transmission: T5, looking for t-56
I assume you have the console out and the shifter assembly in view? If so,look for an orange/black wire.This is the negative signal you will need for the remote start system.This should be true for all 3rd gen f-bodies.E-mail me if you are still having trouble.

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Old Nov 26, 2001 | 04:43 PM
  #5  
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From: Northern NJ
Car: 89 Formula / 09 G8
Engine: LS1 / LS3
Transmission: M6 / M6
Axle/Gears: 3:42 / 3:27
Ok, i know where that is.. i have checked it several times, it doesn't seem to give a neg value though... maybe i missed something. I will try it agin.

Thanks
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Old Nov 26, 2001 | 08:11 PM
  #6  
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From: Tx
Car: 92 Z, 91 Formula, 04 CTS, 01 Tahoe
Engine: 355 forged 4 bolt, SuperRam, 58mm t
Transmission: T5, looking for t-56
How are you testing the wire?Take a meter,plug one end into a 12v source and then the other probe into the green/blk wire.In Park and Neutral,you should be reading a 12v value.
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Old Nov 26, 2001 | 10:11 PM
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From: Northern NJ
Car: 89 Formula / 09 G8
Engine: LS1 / LS3
Transmission: M6 / M6
Axle/Gears: 3:42 / 3:27
I am testing by doing a continuity test. One lead on a ground and the other is testing each wire. That explains it then. its a positive signal when the shifter is in park... i need a negative signal. I just glued a micro switch onto the shifter that closes only when its in the park position.

Thanks for all the help, because of you lot it works!!

[This message has been edited by Omega (edited November 26, 2001).]
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Old Nov 26, 2001 | 10:29 PM
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From: So.west IN
Car: 87 Formula/ 00 Xtreme
Engine: TPI 305/ v6
Transmission: struggling t-5/ 4l60E
Axle/Gears: 3.08/ 3.23
I'm a little confoozed as to how this alram works now. From the way you descibe (or I guess how I'm understanding it) this alarm is over-riding/disabling your neutral safety switch ? (as you can tell, I've never owned/touched an alarm in my life)

Most any(every) car is designed from the factory to not be able to start in gear, how does the alarm disable this ?

Instead of the micro-switch (which isn't a bad idea), why not use the relay, as you did to your starter wire, on the wire the has +12v on it from the NSS when in park (and I assume neutral too)? I'm just thinking from a reliability/less chance of failure point of view.

[This message has been edited by deadbird (edited November 26, 2001).]
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Old Nov 26, 2001 | 10:56 PM
  #9  
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From: Northern NJ
Car: 89 Formula / 09 G8
Engine: LS1 / LS3
Transmission: M6 / M6
Axle/Gears: 3:42 / 3:27
Its weird, i know. As soon as i tell the alarm to start the car, it looks for a specific wire to be grounded (ie: NSS) if this wire is not grounded, it will not start the process. It is not over-riding or disabling the NSS, it just needs a different version than the one that GM uses.
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Old Nov 26, 2001 | 11:17 PM
  #10  
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From: So.west IN
Car: 87 Formula/ 00 Xtreme
Engine: TPI 305/ v6
Transmission: struggling t-5/ 4l60E
Axle/Gears: 3.08/ 3.23
Ahh,, I see
Glad I don't have to mess with alarms & crap like that here (yet).
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Old Nov 27, 2001 | 08:34 AM
  #11  
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From: Northern NJ
Car: 89 Formula / 09 G8
Engine: LS1 / LS3
Transmission: M6 / M6
Axle/Gears: 3:42 / 3:27
They are more time consuming than anything else. If you don't rush it and have a list of the proper wire colours and where the are located its not too bad.
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