5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

I want to install a kill switch switch for anti theft....

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Old Jul 27, 2009 | 01:37 PM
  #11  
FivePointOhh's Avatar
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Originally Posted by westcoast25
How did you do the battery cut off?

here is how it was. i changed out the longer bolts for a 60's style gm flip up license plate bracket. so now my license plate flips up instead of me having to tilt the lisence plate and reach under to flip the switch.




switches are easy to find
i'll give you a good 10 min to try and find my fp cut off. good luck buddy
Old Jul 27, 2009 | 01:51 PM
  #12  
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Originally Posted by ttocs
not sure how technical you are. There are some neat security tricks to use the cig lighter as the kill switch. When you want to kill it all you to is pull the lighter out of the socket and throw it in the glove box or consol. Of course you loose the intended use of the lighter, but nobody will ever know to look at it when it will not start.....

How are you gonna say something about it and not tell us one man? I'm sure I could figure something out but what do you got???

My 93 has a switch to cut the power to the inertia switch. It had been broken into before I got to it though, I found quarter window glass inside the body.
Old Jul 28, 2009 | 12:25 AM
  #13  
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I can see if I can explain it on here but it ain't gonna be easy. Let me start simple, do you know how to use a relay to make a normally open starter kill? You cut the starter wire, and insert the wires on terminals #30 and #87 doesn't matter which one. half of the coil of the relay(lets say #85) will need to go to the keyside of the starter wire you cut. The other coil terminal(#86) goes to the center tap of the cig lighter, keep the outside of the cig lighter grounded as normal.

On a normally open starter kill, this relay will need to be energized while cranking for the starter to crank. When you turn the key to the start position, the relays coil is energized by the voltage on the starter wire and the ground provided through the cig lighter. So what happens is that when the circuit to the coil of the relay is not completed, the starter will remain open and the car will not crank. For the car to start the cig lighter will have to be pushed in as though you are trying to heat it up to light yer doobie. If it is just poped out in the waiting mode this will keep the relays coil from activating while the key is turned to the start position and keep the car from starting.

Make sence?
Old Aug 2, 2009 | 01:08 AM
  #14  
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Originally Posted by 93 LX FiveO
the pump relay is usually under the drivers seat

just use an inline fuse.. pull the fuse to cut-power

switches are easy to find
Ok, today I went to install the switch, and I took out the drivers seat. One problem, the relay wasn't under the seat. What does it look like, and where else could it be? Does anybody have a picture of it? Thanks
Old Aug 2, 2009 | 12:20 PM
  #15  
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Originally Posted by westcoast25
Ok, today I went to install the switch, and I took out the drivers seat. One problem, the relay wasn't under the seat. What does it look like, and where else could it be? Does anybody have a picture of it? Thanks
It's on the passenger side strut tower. There will be two relays, one for A/C, one is your F/P, the two relays are inter-changeable. Just pull one of them, if your car doesn't start, that's the one for your F/P
Old Aug 2, 2009 | 05:50 PM
  #16  
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Originally Posted by Liquid_02
It's on the passenger side strut tower. There will be two relays, one for A/C, one is your F/P, the two relays are inter-changeable. Just pull one of them, if your car doesn't start, that's the one for your F/P
I must be a retard. I only see one of them there, so I pulled it and the cars still starts. It's right in front of the strut tower right? Is possible that a previous owner moved it?
Old Aug 4, 2009 | 11:55 PM
  #17  
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bump.....
Old Aug 8, 2009 | 04:49 PM
  #18  
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Is there anywhere else the relay could be on a 89 Mustang???
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