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keypad starter kill

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audioman2007 
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Posted: February 27, 2008 at 3:17 PM / IP Logged  
How reliable are they? One of those came with my alarm, but I never installed it. I got the keypad, mounting hardware, relay, and relay harness. Is it even worth installing?
tedmond 
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Posted: February 27, 2008 at 9:09 PM / IP Logged  
not worth it, if you have the alarm, dont bother. i find those things soo bulky and it just acts like a starter defeat. simply using a relay to break the continuity on the start wire.
audioman2007 
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Posted: February 28, 2008 at 5:50 PM / IP Logged  
So I would be better off just using a relay to break continuity? Um, on my alarm, the ground when armed wire says in the manual that it  is used for starter defeat and anti-grind protection. How is it possible to do both? I mean if you think about it, it would only do the starter defeat. When you RS the vehicle, in order to get in tit, you would need to disarm the alarm. By disarming it, the ground when armed wire nolonger is grounded, thus it wont prevent grinding. Someone on here said that with the vehicle RS'd, that when you turn the key then, there is no way to grind the starter if the ground when armed wire is connected. But that makes no sense unless you are sitting in the car with the system armed and do it then. But then I was thinking, do I even need a starter defeat? I mean without the key, the car cant be driven anyways, correct?
tedmond 
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Posted: February 28, 2008 at 8:56 PM / IP Logged  
it is possible. the ground when armed acts as the starter defeat. when you disarm, it acts as a Ground when running, thus still energizing the relay to break th eocntinuity on the start wire. you dont need the starter defeat unless you dont want it. i mean it takes 5 min or less to whip that relay in place and its just nice to have incase some1 hotwired the car, it wouldnt start anywayss.
audioman2007 
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Posted: February 29, 2008 at 3:26 AM / IP Logged  
Well I was ganna install a LED and use that wire as my ground that way the LED only works when the car is armed. Could I go and test that wire by running the LED ground off it, then simply RS the car, and if after I remote start the car and disarm the alarm, if that LED is still on, then I know that wire is still grounded?
tedmond 
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Posted: February 29, 2008 at 6:12 PM / IP Logged  
i wouldnt do that. the output for LED are very low current. not enough to trigger a relay.
audioman2007 
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Posted: February 29, 2008 at 8:18 PM / IP Logged  
No. What I meant was to simply wire in a LED to test the wire. I would run the LED power to the battery. Then run its ground to that wire. I had done this before and have it posted in another topic. When I did this and armed the vehicle, the LED lit up. Then when I disarmed, the LED went off. I could simply wire that LED back up just to see if that wire is grounded when the car is remote started and disarmed. If its lit, then I know that wire will prevent grinding the starter.
KPierson 
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Posted: February 29, 2008 at 9:44 PM / IP Logged  

Stolen from another member on here (whom I haven't seen for a while)

When in doubt, try it out!

I wouldn't bother with the LED, just hook the starter kill relay up.  Start by verifying the starter kill works.  If it does, remote start the car, disarm it, and try to crank it.  The worst that can happen is your starter will engage and grind a bit, which won't hurt anything (although it won't sound good).

I think you will be pleasently surprised with the results, and you will then be able to believe tedmond about his correct description of how the (-) when armed is also a (-) while running output!

Kevin Pierson
audioman2007 
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Posted: March 01, 2008 at 10:38 AM / IP Logged  
Its not that I dont believe tedmond, cuz I do. BUT i want to be careful not to mess anything up either. I do understand how that wire can be used for 2 things. Like that wire will be grounded when the vehicle is armed to prevent someone from hot wiring it. When the car is remote started, the remote start sends a messege to that wire which in turns grounds it. That then prevents the starter from being grinded. Another thing...... when I install this relay, I would need to cut the starter wire. I would cut the starter wire between the RS unit and the starter motor correct? This way I can still RS the car.
tedmond 
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Posted: March 01, 2008 at 11:49 AM / IP Logged  

1)when I install this relay, I would need to cut the starter wire. I would cut the starter wire between the RS unit and the starter motor correct? This way I can still RS the car.

you wire cut the starter wire in order to have a properly functioning starter kill.

85 - ignition

86 - anti grind/starter kill output from unit
87a - starter wire, key side
30 - starter wire motor side
from the unit, attach the starter OUTPUT towards the motor, so basically after the relay.
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