I thought I would share my findings today in regards to disabling the stock alarm in less than five minutes. I have read several threads on the mater and I finally decided to give it a go. I used my multimeter to find any wire coming out of the stock harnesses that may have had a negative pulse on actuation of my keyless entry/alarm. I found the follow set up to work.

There are three harnesses on the driver side door (touring model) closest to the door handle. The middle one is the largest and it contains a wire, which is black with red dashes. This wire generates a faint negative pulse when actuating the keyless entry. I simply used a jumper wire (I eventually soldered it) from the Green/Black key tumbler switch to the black/red wire I mentioned before. A quick test yielded positive results.

The only drawback I can see from this type of setup is that it disables the stock alarm all together because the negative pulse is actuated each time the keyless entry button is pushed. This is not so bad in my opinion, but I would rather the stock alarm work with my aftermarket alarm since it has more sensor inputs and activates the horn and lights.

They only way around this would be to find a wire that only pulsed on the disarming and not the arm. Oh well, I don?t have to use my key hole anymore and that suites me fine.

 

LOL!

 

sorry to bring old thread back from the grave, but I just want to know what do you mean exactly by this "I simply used a jumper wire (I eventually soldered it) from the Green/Black key tumbler switch to the black/red wire"?

Did you cut the green/black and then attacked it to black/red or did you just use a wire and tapped into each wire like they are attached to each other?

Thanks

 

I Just joined these 2 wires together, and stock alarm doesn't come on anymore. However, that stupid security light is on, and it doesn't come off so I unpluged the light. Will this cause any problems? Was I suppose to join these 2 wires together, or what?

Amel

 

zerobanger helped me with mine and he grounded out the green wire to the door. the only draw back i had was the alarm light by the parking break would stay on when the car was off.

 

That's exactly what I have. What i did was I soldered that black wire with red dots to the green wire with black line. And Everything works fine, i mean alarm doesn't come on etc. But I just noticed that the light is on and bright. So I disconnected the light completely.

Do you leave your on?

 

i disconnected the solid light (zb)

 

How long did you have yours disconnected like that?

 

it wont kill your battery youll be fine

 

Cool Thanks.

Amel

 

why not use that bright light as a theft deterent. Rig it to your new alarm instead of using an LED to show you that the system is armed. I always thought that was how the stock set-up should work.

Also can anyone reccomend a good alarm/keyless entry? I don't need microwave sensors. Also one that is easy to install, since I'm not trusting some stereo shop with my wiring.

 

My security light flashes for just a moment and then goes off. I did not ground any wires. Instead, I used the negative (grounding) pulse of the red/black wire to duplicate what happens when you turn the key. The alarm is only looking for this momentary grounding signal to deactivate the alarm, and by grounding it permanently you are not accomplishing the same thing.

It helps if you look at it this way. When you turn the key you turn it 90 degrees and then back again. You are not turning it 90 degrees and then pulling the key out. While you are turning the key the switch on the back of the key tumbler passes a grounding pole which produces a single moment grounding signal.

I suppose you could accomplish the same thing by using a 12v relay and trigger it with one of the device outputs on your aftermarket alarm. You would then simply run a wire to the green/black wire and all should work the same.

By the way, I believe you also have to use the above relay method to get the parking lights to flash when you activate your keyless entry since the lights are also turned on by connecting ground rather than power.