How do I disconnect the alarm system

There isn't one the alarm if factory fitted is integrated into the ecm so to disable the alarm you would need to disable the engine control module

Did you get an answer for this question?

great question...
stock or aftermarket.
btw, stock means as left factory..... not hacked.

This could be caused by a malfunctioning aftermarket alarm system, check to see if there is a small LED on a bracket on the lower left of the dash, if it has this I would recommend having the system removed at an automotive alram shop.

The car alarm on your 2000 Windstar minivan is wired into your van's battery. When you are making a repair to your car such as a battery change out your alarm can go off. You can easily disable the Windstar's car alarm by disconnecting the battery from the alarm. The battery is connected to the Windstar battery's negative terminal. Disconnecting the terminal from the battery will disable the alarm.

• Socket wrench

1. 1 Raise the hood of the Windstar to gain access to the battery.
   
2. 2 Loosen the negative battery terminal labeled with a "-" with a socket wrench.
   
3. 3 Disconnect the terminal from the battery to disable the alarm system.
   

Sometimes the alarm gets tripped when the battery has been disconnected as the system thinks someone is trying to steal the vehicle when it loses power. Usually if you reconnect the battery [and the alarm sounds] then lock and unlock the drivers door with the key or the remote on the key fob it will reset the alarm and everything will work again. I've had to try a couple of times to get these systems to reset so you may have to do the same. There may also be a procedure listed in your owners manual for this situation so I'd take a look there too. Good luck, hope this helps out!

It maybe both. If the alarm is built into the ECM you can try disconnecting the Negetive battery terminal to reset the ECM. Make sure all the fuses are good for the alarm and for the trunk release. If the alram is not incorporated in the ECM remove the in-line fuse from the power line of the alarm to reset the alarm. This should resolve the problem if the problem is the alarm and not the release.

when the alarm goes off try unlocking the trunk the jeep i bought the larm is runned through the trunk if i dont unlock the trunk first the alram goes off

what part of alarm and how did you disconnect it??

You need to hook the alarm back up and do a reset on the car.

Here is how you do it.

1) Turn factory original key to "ON" position for 5 seconds
2) Turn key to "OFF" position.
3) Repeat 1 and 2 again. Do it twice.
4) This should reset the computer to the chip inside the key.

If that didn't work,You will need to have the codes downloaded at the dealer.