Anti-theft "device"

[BullittAndy]

Thought I'd pass along an idea I just finished on my car. I've read about a switch between the fuel pump for an anti-theft device but I have another version that others might like-especially AOD to T-5 conversion guys.

Because the Neutral safety switch (NSS) on a AOD is no longer used on the manual swap I spliced a switch into these wires (white/pink and red/light blue-I think that's right?) and ran the switch inside the car.

This was very easy since the wires enter under the center console and then you can run them any direction, front, back, sideways. I won't say where I hid my switch (just in case-bad karma) but you'll have any number of choices.

I also at the same time put a dummy switch inside the glove box next the hatch release as a stumbling block.

I bought the switches at Radioshack for $3 and it took about 1 hour, just another idea for future searches.

 

[criticman]

Hah, you're going to piss off a would-be car thief. I know the original owner of mine had an anti-theft device of a somewhat similar concept - is a digital key that cuts fuel and most other power if removed.

Anyone, nice idea, thanks.

 

[DmnStr8]

I believe my car was a converted AOD so I'll have to check this out. Anyway to positively identify these lines?

Cool idea.

 

[eagleautosports]

I installed a switch between the fuel pump relay and computer. No power to the relay, no pump. No pump, no go. Car thieves want to get in and go. They're not going to sit there and figure out why it's not starting so they'll move to one easier. Speaking from experience...

 

[BullittAndy]

I believe my car was a converted AOD so I'll have to check this out. Anyway to positively identify these lines?

Cool idea.

there's a wiring diagram somewhere on here that will show you. Also, there is a good chance that these wires on your car (since its converted) are simply connected together inside the trans tunnel. Take a look and see what you find.

 

[90blacknight]

In my neck of the woods I worry more about tow trucks than anything else. No real anti theft device for tow trucks except never being more than 50 feet away from your car.

 

[iwashmycar]

In my neck of the woods I worry more about tow trucks than anything else. No real anti theft device for tow trucks except never being more than 50 feet away from your car.

+1. im aftraid to park at my Apt complex at school


they roll trough with this POS all rusted out tow truck and just sling cars trough the snow behind them. I know i would lose a bumper for sure

 

[jrichker]

Be careful of the wire sizes and switch current capacity. If you switch the pump power feed insted of the relay power feed you can quickly overheat small gauge wiring and cheap switches.

Follow this tech note for the best way to wire a fuel pump kill or anti-theft switch the right way, switching only the low current relay power...

On 86- 91 cars the fuel pump relay is under the driver’s seat, 92 and later cars, the fuel pump relay is under the Mass air duct on the passenger fender well.

Note that the wire colors changed in 1991, so there are two different descriptions.

86-90 model cars:
Cut the red/black wire going to the fuel pump relay. Splice a 16 or 18 gauge wire into the wire and connect it to one side of the switch. Connect the other side of the switch to the other end of the red/black wire going to the fuel pump relay. When you are done the switch should be in the middle of the spliced red/black wire that goes to and comes from the fuel pump relay. Using the control side of the circuit allows you to use light gauge wire and light duty switches. There is less than 1 amp going through the circuit, so you don’t have to worry about voltage drop across the wiring depriving the fuel pump of electrical power.
See http://www.autozone.com/servlet/UiB..._us/0900823d/80/16/71/3c/0900823d8016713c.jsp for 79-88 model wiring diagrams.


91-93 model cars:
Cut the Lt Blue/Orange wire going to the fuel pump relay. Splice a 16 or 18 gauge wire into the wire and connect it to one side of the switch. Connect the other side of the switch to the other end of the Lt Blue/Orange wire going to the fuel pump relay. When you are done the switch should be in the middle of the spliced Lt Blue/Orange wire that goes to and comes from the fuel pump relay. Using the control side of the circuit allows you to use light gauge wire and light duty switches. There is less than 1 amp going through the circuit, so you don’t have to worry about voltage drop across the wiring depriving the fuel pump of electrical power.
See http://www.autozone.com/servlet/UiB..._us/0900823d/80/19/59/5a/0900823d8019595a.jsp for 89-93 model wiring diagrams.

 

[BullittAndy]

How many amps are in the NSS circuit? I've got a 10 amp switch-enough?

 

[Darkwriter77]

I dig the neutral safety switch method more than the fuel pump route. Since mine's an AOD-T5 conversion, I'll have to give this a shot on mine sometime ... just for extra piece of mind. Not that a car as beat up and worn as mine is as likely a theft target as a much more pristine and lower-mileage model, but still ... it's a notch. I mean, I wasted the past month trying to sell the thing for only $2,500, and all I got was a bunch of cheapskates and losers that wanted to play the "Wave cash in his face and he'll drop the price" game ... but I'm sure someone out there's stupid enough to wanna steal it (instead of buying it for a steal).

I'm kinda partial to the "fire a couple of rounds, THEN call 9-1-1" anti-theft system.

 

[jrichker]

How many amps are in the NSS circuit? I've got a 10 amp switch-enough?

Did you use your trick to disable the fuel pump or just disable the starter?

The NSS harness is probably 18 gauge wire which is good for 5-7 amps. A 10 amp switch should be good for that.

 

[BullittAndy]

I have a 91 Hatch but I couldn't find the fuel pump wiring per your previous thread. I may have covered it up when I replaced the car last year-I can't remember. I thought about using the the fuel pump switch in the hatch area but runnning wires from back to front means taking apart the interior.

No fuel pump interupt, just the starting circuit. Essentially, the starting circuit "thinks" the car is in "D" or "R"-so no go when switch is on.

Also it seems like the clutch interupt would also be a viable alternative to the NSS. Although those wires are inside the car so may be more accessible to a thief. As opposed to the NSS wires being under the car and then under the console/radio/dash area.

 

[gtxracing]

I have an anti theft device, actually two. It's the Mossberg 500 series 12gauge. It's works great too, when someone approaches my car and attempts to break a window , you hear chirp chirp, then you hear a CLINK CLINK sound as a warning. Then when they continue to get in the car, you hear this super loud BANG!!!!!!!!!!!!!

He's hauls ass, No car stolen, no problems, back to bed, goodnight