I posted a thread on the Integra forum about the thievery attempt on my girfriend's GSR. they weren't able to get it started despite hotwiring it and breaking thsteering column etc. the link can be found here:

https://honda-tech.com/zerothread?id=1240673

I used a 9 pin connector from Radioshack to make an ignition/fuel kill. It's pretty easy to do.

1. Get one of these:
2. Find the wires leading out of your ECU for the fuel pump realy and ignition primary signal.
3. Cut the circuits. Keep track of the breaks in the circuit. Connect some wires from the breaks in the curcuit and run them to the intended plug location. I would suggest breaking the circuit in a couple places so that the wires cannot be easily traced back to the source. Also, you'll want to ensure that the new wires are installed into the loom so that they blend in with the other wires.
4. Install the wires on the connector. Keep track of where you connected all the wires.
5. Get one of these:
6. Jump all the breaks that you made in the circuits by connecting little pieces of wire to the pins on the plug.
7. Take the plug out of the car with you when you leave...

Make sure to keep a diagram of what you just got through doing so that you can make a replacement plug if needed.

 

Can u please post up a Diagram for it? Might make it easyier for others. Great Idea to.

 

i am also interested in this idea. we need more details, diagram.

 

does that mean you need for to get 2 male and 2 female plugs to create a break, right?

 

Here's a diagram of the whole setup. It isn't the prettiest thing, but it should give you an idea...



Note: the wiring loom going off into the distance... You should Try to make sure the wires blend into the loom when done. Also, make sure you switch up the order of the connections...

 

Bookmarked.

 

Great idea bro

I read of a similar idea in one of those anti-theft threads but instead the author mentioned using an xlr plug which only has like 3 or 4 pins. Well obviously with setup having more pins it is much better! Never would of thought of this type of plug

 

Awesome idea bro.

 

thanks for the props everyone. I hope that some of you guys may be able to prevent a theft by using this tool. It isn't completely garunteed, but it worked in my case!

 

Thanks.

What gauge wires do you guys recommend?

Can you IM me where about or what location to trace the ecu wires?

 

i would use 18-22 gauge wire... get it from radio shack. i just installed my 2 way alarm and will be doing this for long term parking. KICK *** idea, and thx for posting.

normally i don't recommend posting security procedures, but this is one of those things that it doesn't matter if you know its there, because if you don't know the installer's pinouts on the DB9 connector you're screwed (F THEIVES!!!).

 

so wait i get the breaks in the circuits and all, but u put the plug in a secret location right? and the other part of the plug has wires to jump the connections? so u have half of the plug with a bunch of wires hangin out of it and u just plug it in? good idea if im understanding lol

 

wow.. very creative

 

just wondering what's the gauge of the stock wiring?
how do you connect the wires to the DB9? solder or do they sell the pins to crimp on?
also do you think it's possible to use a RJ45 connector instead? that way you don't have to solder......

 

Wow that is a really good idea. I might have to give it a try.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by o_O &raquo;</TD></TR><TR><TD CLASS="quote">just wondering what's the gauge of the stock wiring?
how do you connect the wires to the DB9? solder or do they sell the pins to crimp on?
also do you think it's possible to use a RJ45 connector instead? that way you don't have to solder......</TD></TR></TABLE>

RJ45 would be a possibility, however its a bit more fragile... breaking the tab would be a bit of a pain. then again its easier to recreate as long as you remember your wiring. i suppose you only loose 1 pin from the DB9 that u wouldn't have used in the first place.

 

ah yes, i forgot about that fragile plastic tab......probably would break in my pocket attached to my keychain....oh well, i'll go the DB9 route and just protect the wires with a D-sub metal housing....

another question? typical DB9 connectors are rated up to 5 amps, should this be a concern?

Thanks

 

I think it wouldnt really matter if used in conjunction with a relay now would it? Just wire it like all those fuel cut switch with the relay that has been posted except replace it with a connector like the one discussed here.

 

Nice, I'd try but I'm not a wiring genius or good at it either. But I'm going to have it done.

 

very nice, im gonna have to try this

 

I used the DB9 solder connections since you really want something that will be robust. The last thing you need is to have the fuel pump relay wire come loose while you're driving...

I was also concerned about the amperage rating of the connector. I just made sure to only break signal circuits or relay circuits. You wouldn't really need to use relays to make the connection since you could simply break the relay signal for whatever component you decided to kill.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crx-treme &raquo;</TD></TR><TR><TD CLASS="quote">so wait i get the breaks in the circuits and all, but u put the plug in a secret location right? and the other part of the plug has wires to jump the connections? so u have half of the plug with a bunch of wires hangin out of it and u just plug it in? good idea if im understanding lol </TD></TR></TABLE>

You don't necessarily have to have the plug in a secret location. you could just install it right under your dash or in your steering column etc.
There should be no wires hanging out of the plug etc. All wires should route to the plug/back to the original circuit. The other plug connector will jumper the multiple circuit breaks...
The whole idea is that the thief will either have to tear apart your entire wiring loom and retrace the breaks, or have to tow your car away instead of hotwiring it...

 

GREAT IDEA.I'M BOOKMARKING THIS

 

zhagg what was ur first reaction did u think ur dettrent failed or they towed it??

 

Definately connect that extra wire to ground. Otherwise you could probably connect all the wires together and the car would run. I'm pretty sure those two wires coming off the ECU are 12v outputs, and while Honda seperated them for a good reason, it's not going to matter to a thief when he's stealing your car. For this reason I also think you should hide it as good as you can.

Looming your connections up is absolutely critical. If they find your connections, then it doesn't matter if your switch requires an eye scan, it can be defeated just as easily as the most basic switch. The only places I can see you making your connections is high up on the ECU harness behind the heater components, or deep under your dash on the wires coming out of the main relay. I get the feeling that most first timers attempting this mod are going to make their connections at the exposed wires right on the ECU plugs and leave the chip harness in plain sight. This is completely worthless and isn't going to slow a thief down more than 30 seconds.

I don't think it defeats the purpose of this how-to to talk openly about the exact wire colors or locations, unless the thief knows specifically that you have this set up on your car.

Don't put this on the ignition harness. Both of my Civics had this on the steering column and I removed them because not only is it completely worthless in this location, but it actually makes hotwiring the car EASIER.

If done properly and actually used 100% of the time, this method is a little bit more secure that a fuel kill switch. But for first timers I suggest trying the kill switch first and this second cuz it's easier. If soldering is out of your league, try the wire connection guide from my site on the walkthrough page.

Now just fix the broken images!