Setting up a kill switch (hidden in plain sight)

CodaMan

California Escapee
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I know there is no way to stop a thief that really wants your Jeep, but let's at least make it more difficult.

I thought I would post my combination lock kill switch ... It uses 3 (or more) switches that must be in the correct position for the Jeep to start. Since it's in plain sight, any would-be thief would first need to know that one of those maybe a kill switch, then know that it's all 3, and lastly, know the combination. It works great and once I paint the interior black you probably won't even see them.

With 3 switches there are 8 combinations, 4 switches have 16 combinations and so on.

Kill_Switch.jpg


Here is the write up for installation:

1) Find which connector your vehicle uses according to the chart at the bottom of the schematic.

Connector locations are as follows:

1997 - 2002 connector 106 location:


106.jpg


2003 - 2004 connector 103 location:

103.jpg


2) Cut the ADE (Auto Disable/re-Enable) wire 5 or 6 inches up from your respective connector

3) Solder the wire coming from your connector to the relay socket wires going to relay terminals 30 and 86. This is your hot ignition wire and will supply power to the NEW relay and the ADE relay once the switches are closed.

4) Use terminal lugs to connect all 3 switches in series (see schematic). Soldering the wires may damage the switches.

5) Mount the switches in your console and run the wires down to the NEW relay. You should only have two unconnected wires, one on each end of the series connected switches.

6) Connect one of the open wires to chassis ground and the other to the wire coming off terminal 85 of the NEW relay. This connection will supply the NEW relay's coil ground once the switches are closed.

7) Setting the "combination" is as simple as arranging how the switches are positioned when closed. Example:

SW1
ON — OFF
SW2
ON — OFF
SW3
OFF — ON

So, for the vehicle to start the top 2 switched would need to be pointed left when closed and the bottom switch right.

Schematic:

Circuit.jpg


Parts List

Relay and Socket — $8.99

Switches (3) — $1.98 ea.

18 AWG wire

Let me know if you have any questions.
 
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This is really, really cool!

My guess is that while someone could figure it out, they wouldn't even have any idea that these things were kill switches, so they wouldn't even bother with it in the first place. Brilliant!
 
I know there is no way to stop a thief that really wants your Jeep, but let's at least make it more difficult.

I thought I would post my combination lock kill switch ... It uses 3 (or more) switches that must be in the correct position for the Jeep to start. Since it's in plain sight, any would-be thief would first need to know that one of those maybe a kill switch, then know that it's all 3, and lastly, know the combination. It works great and once I paint the interior black you probably won't even see them.

With 3 switches there are 8 combinations, 4 switches have 16 combinations and so on.

View attachment 12643

Here is the write up for installation:

1) Find which connector your vehicle uses according to the chart at the bottom of the schematic.

Connector locations are as follows:

1997 - 2002 connector 106 location:

View attachment 12644

2003 - 2004 connector 103 location:

View attachment 12645

2) Cut the ADE (Auto Disable/re-Enable) wire 5 or 6 inches up from your respective connector

3) Solder the wire coming from your connector to the relay socket wires going to relay terminals 30 and 86. This is your hot ignition wire and will supply power to the NEW relay and the ADE relay once the switches are closed.

4) Use terminal lugs to connect all 3 switches in series (see schematic). Soldering the wires may damage the switches.

5) Mount the switches in your console and run the wires down to the NEW relay. You should only have two unconnected wires, one on each end of the series connected switches.

6) Connect one of the open wires to chassis ground and the other to the wire coming off terminal 85 of the NEW relay. This connection will supply the NEW relay's coil ground once the switches are closed.

7) Setting the "combination" is as simple as arranging how the switches are positioned when closed. Example:

SW1
ON — OFF
SW2
ON — OFF
SW3
OFF — ON

So, for the vehicle to start the top 2 switched would need to be pointed left when closed and the bottom switch right.

Schematic:

View attachment 12646

Parts List

Relay – $2.98

Relay Socket — $3.79

Switches (3) — $2.18 ea.

18 AWG wire

Let me know if you have any questions.
That will definable slow a thief down. You can also use SPDT (single pole double throw) switches in series to increase the possible combinations with less switches to wire in. I have two on my 68 caddy.
 
That will definable slow a thief down. You can also use SPDT (single pole double throw) switches in series to increase the possible combinations with less switches to wire in. I have two on my 68 caddy.

Yep, many ways to do it.
 
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This is really, really cool!

My guess is that while someone could figure it out, they wouldn't even have any idea that these things were kill switches, so they wouldn't even bother with it in the first place. Brilliant!
My thought exactly
 
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That's Awesome...I like the plain site idea....I read somewhere that many thieves are generally lazy and are looking for the easiest car to take, so if they are a row of cars all with alarms or kill switches (wherever they are) and one with none of these you don't need to be a rocket scientist to work out which one would be targeted.
 
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My 2001 has the factory theft deterrent system. The key symbol that lights up when you first turn your key to run. Without the properly programmed key, the ECM is a brick. Crook would have to cut out the floor and make like Fred Flintstone.
 
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My 2001 has the factory theft deterrent system. The key symbol that lights up when you first turn your key to run. Without the properly programmed key, the ECM is a brick. Crook would have to cut out the floor and make like Fred Flintstone.

My latest 2002 jeep has the same factory security system. My first 2002 that I bought new didn't have this feature. It took me about a week with the second 2002 jeep to finally realize that the keys were a different color. The non security jeep had plain black keys. The one with the security system has gray keys to indicate that it's chipped.
 
Hmmmmm ........
After reading this thread, I went out and opened my '04 with a key that was cut from the locksmith.
Doors opened ...... TJ started/stalled ....... started/stalled ....... started /stalled.
Have the grey Jeep keys.
Does this sound like the 'Theft Determent System' ... ?
Thanks,
HL
 
Hmmmmm ........
After reading this thread, I went out and opened my '04 with a key that was cut from the locksmith.
Doors opened ...... TJ started/stalled ....... started/stalled ....... started /stalled.
Have the grey Jeep keys.
Does this sound like the 'Theft Determent System' ... ?
Thanks,
HL

"SKIM will prevent your Wrangler from being hot-wired or having a non-chipped key being duplicated and used to steal it. When a non-coded key is used it will kill your Jeep after about 2 seconds, therefore effectively preventing someone from stealing it."

So yes, your TJ has the SKIM system installed, which is why your key isn't working.
 
Hmmmmm ........
After reading this thread, I went out and opened my '04 with a key that was cut from the locksmith.
Doors opened ...... TJ started/stalled ....... started/stalled ....... started /stalled.
Have the grey Jeep keys.
Does this sound like the 'Theft Determent System' ... ?
Thanks,
HL
At the end of the day it only takes a pen-knife to open my TJ with plastic windows lol
 
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So am I to understand that my '15 JKU with the chipped key cannot be hot wired to start it? I have unchipped keys and I know that they won't start the engine; in fact, as I recall, unless I have turned off the alarm by manually locking and unlocking the door, when I open the door with the unchipped key, the alarm blasts until I reset it with a chipped key (so it's only useful when you've actually locked your chipped key in the jeep). But back to my original question - it sounds like with the chipped key I don't need a kill switch - correct?
 
So am I to understand that my '15 JKU with the chipped key cannot be hot wired to start it? I have unchipped keys and I know that they won't start the engine; in fact, as I recall, unless I have turned off the alarm by manually locking and unlocking the door, when I open the door with the unchipped key, the alarm blasts until I reset it with a chipped key (so it's only useful when you've actually locked your chipped key in the jeep). But back to my original question - it sounds like with the chipped key I don't need a kill switch - correct?

Yes, you do not need the additional kill switch.

There are so many movies and shows on TV where someone reaches under the dash without even seeing what they are feeling, ripping down a few wires which are already showing bare copper, striking them together, and drive off while under gunfire and doing this in a few seconds. Reality and fiction are miles apart.
 
Yes, you do not need the additional kill switch.

There are so many movies and shows on TV where someone reaches under the dash without even seeing what they are feeling, ripping down a few wires which are already showing bare copper, striking them together, and drive off while under gunfire and doing this in a few seconds. Reality and fiction are miles apart.

Thank you! You just saved me a lot of time, expense, and worry.
 
Can't I just remove the ASD switch and that will deter a thief?
 
Right, I'm just going out of town for two nights and will be near a beach. Virtually every other night I'm garage parked ten miles out in the middle of nowhere. I was thinking just pull the ADS when I'm in highly populated metroplexes or other high theft areas...

When I get the time I might set up your scheme. Looks nice!
 
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